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Posted to commits@mynewt.apache.org by ma...@apache.org on 2016/09/30 00:31:33 UTC

[50/51] [abbrv] [partial] incubator-mynewt-core git commit: net/ip/lwip_base; LwIP.

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/f5a0f2a0/net/ip/lwip_base/CHANGELOG
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+HISTORY
+
+(git master)
+
+  * [Enter new changes just after this line - do not remove this line]
+
+  ++ New features:
+
+  2016-07-27: Simon Goldschmidt
+  * opt.h, timeouts.h/.c: added LWIP_TIMERS_CUSTOM to override the default
+    implementation of timeouts
+
+  2016-07-xx: Dirk Ziegelmeier
+  * Large overhaul of doxygen documentation
+
+  2016-04-05: Simon Goldschmidt
+  * timers.h/.c: prepare for overriding current timeout implementation: all
+    stack-internal caclic timers are avaliable in the lwip_cyclic_timers array
+
+  2016-03-23: Simon Goldschmidt
+  * tcp: call accept-callback with ERR_MEM when allocating a pcb fails on
+    passive open to inform the application about this error
+    ATTENTION: applications have to handle NULL pcb in accept callback!
+
+  2016-02-22: Ivan Delamer
+  * Initial 6LoWPAN support
+
+  2016-02-XX to 2016-03-XX: Dirk Ziegelmeier
+  * Cleanup TCPIP thread sync methods in a way that it is possibe to use them
+    in arbitrary code that needs things to be done in TCPIP thread. Used to
+    decouple netconn, netif, ppp and 6LoWPAN from LWIP core.
+
+  2016-02-XX: Dirk Ziegelmeier
+  * Implement dual-stack support in RAW, UDP and TCP. Add new IP address
+    type IPADDR_ANY_TYPE for this. Netconn/Socket API: Dual-stack is
+    automatically supported when an IPv6 netconn/socket is created.
+
+  2015-12-26: Martin Hentschel and Dirk Ziegelmeier
+  * Rewrite SNMP agent. SNMPv2c + MIB compiler.
+
+  2015-11-12: Dirk Ziegelmeier
+  * Decouple SNMP stack from lwIP core and move stack to apps/ directory.
+    Breaking change: Users have to call snmp_init() now!
+
+  2015-11-12: Dirk Ziegelmeier
+  * Implement possibility to declare private memory pools. This is useful to
+    decouple some apps from the core (SNMP stack) or make contrib app usage
+    simpler (httpserver_raw)
+
+  2015-10-09: Simon Goldschmidt
+  * started to move "private" header files containing implementation details to
+    "lwip/priv/" include directory to seperate the API from the implementation.
+
+  2015-10-07: Simon Goldschmidt
+  * added sntp client as first "supported" application layer protocol implementation
+    added 'apps' folder
+
+  2015-09-30: Dirk Ziegelmeier
+  * snmp_structs.h, mib_structs.c, mib2.c: snmp: fixed ugly inheritance
+    implementation by aggregating the "base class" (struct mib_node) in all
+    derived node classes to get more type-safe code
+
+  2015-09-23: Simon Goldschmidt
+  * netif.h/.c, nd6.c: task #13729: Convert netif addresses (IPv4 & IPv6) to
+    ip_addr_t (so they can be used without conversion/temporary storage)
+
+  2015-09-08: Dirk Ziegelmeier
+  * snmp: Separate mib2 counter/table callbacks from snmp agent. This both cleans
+    up the code and should allow integration of a 3rd party agent/mib2. Simple
+    counters are kept in MIB2_STATS, tree/table change function prototypes moved to
+    snmp_mib2.h.
+
+  2015-09-03: Simon Goldschmidt
+  * opt.h, dns.h/.c: DNS/IPv6: added support for AAAA records
+
+  2015-09-01: Simon Goldschmidt
+  * task #12178: hardware checksum capabilities can be configured per netif
+   (use NETIF_SET_CHECKSUM_CTRL() in your netif's init function)
+
+  2015-08-30: Simon Goldschmidt
+  * PBUF_REF with "custom" pbufs is now supported for RX pbufs (see pcapif in
+    contrib for an example, LWIP_SUPPORT_CUSTOM_PBUF is required)
+
+  2015-08-30: Simon Goldschmidt
+  * support IPv4 source based routing: define LWIP_HOOK_IP4_ROUTE_SRC to point
+    to a routing function
+
+  2015-08-05: Simon Goldschmidt
+  * many files: allow multicast socket options IP_MULTICAST_TTL, IP_MULTICAST_IF
+    and IP_MULTICAST_LOOP to be used without IGMP
+
+  2015-04-24: Simon Goldschmidt
+  * dhcp.h/c, autoip.h/.c: added functions dhcp/autoip_supplied_address() to
+    check for the source of address assignment (replacement for NETIF_FLAG_DHCP)
+
+  2015-04-10: Simon Goldschmidt
+  * many files: task #13480: added LWIP_IPV4 define - IPv4 can be disabled,
+    leaving an IPv6-only stack
+
+  2015-04-09: Simon Goldschmidt
+  * nearly all files: task #12722 (improve IPv4/v6 address handling): renamed
+    ip_addr_t to ip4_addr_t, renamed ipX_addr_t to ip_addr_t and added IP
+    version; ip_addr_t is used for all generic IP addresses for the API,
+    ip(4/6)_addr_t are only used internally or when initializing netifs or when
+    calling version-related functions
+
+  2015-03-24: Simon Goldschmidt
+  * opt.h, ip4_addr.h, ip4.c, ip6.c: loopif is not required for loopback traffic
+    any more but passed through any netif (ENABLE_LOOPBACK has to be enabled)
+
+  2015-03-23: Simon Goldschmidt
+  * opt.h, etharp.c: with ETHARP_TABLE_MATCH_NETIF== 1, duplicate (Auto)-IP
+    addresses on multiple netifs should now be working correctly (if correctly
+    addressed by routing, that is)
+
+  2015-03-23: Simon Goldschmidt
+  * etharp.c: Stable etharp entries that are about to expire are now refreshed
+    using unicast to prevent unnecessary broadcast. Only if no answer is received
+    after 15 seconds, broadcast is used.
+
+  2015-03-06: Philip Gladstone
+  * netif.h/.c: patch #8359 (Provide utility function to add an IPv6 address to
+    an interface)
+
+  2015-03-05: Simon Goldschmidt
+  * netif.c, ip4.c, dhcp.c, autoip.c: fixed bug #37068 (netif up/down handling
+    is unclear): correclty separated administrative status of a netif (up/down)
+    from 'valid address' status
+    ATTENTION: netif_set_up() now always has to be called, even when dhcp/autoip
+    is used!
+
+  2015-02-26: patch by TabascoEye
+  * netif.c, udp.h/.c: fixed bug #40753 (re-bind UDP pcbs on change of IP address)
+
+  2015-02-22: chrysn, Simon Goldschmidt
+  * *.*: Changed nearly all functions taking 'ip(X)_addr_t' pointer to take
+    const pointers (changed user callbacks: raw_recv_fn, udp_recv_fn; changed
+    port callbacks: netif_output_fn, netif_igmp_mac_filter_fn)
+
+  2015-02-19: Ivan Delamer
+  * netif.h, dhcp.c: Removed unused netif flag for DHCP. The preferred way to evaluate
+    if DHCP is active is through netif->dhcp field.
+
+  2015-02-19: Ivan Delamer
+  * netif.h, slipif.c, ppp.c: Removed unused netif flag for point to point connections
+
+  2015-02-18: Simon Goldschmidt
+  * api_lib.c: fixed bug #37958 "netconn API doesn't handle correctly
+    connections half-closed by peer"
+
+  2015-02-18: Simon Goldschmidt
+  * tcp.c: tcp_alloc() prefers killing CLOSING/LAST_ACK over active connections
+    (see bug #39565)
+
+  2015-02-16: Claudius Zingerli, Sergio Caprile
+  * opt.h, dhcp.h/.c: patch #8361 "Add support for NTP option in DHCP"
+
+  2015-02-14: Simon Goldschmidt
+  * opt.h, snmp*: added support for write-access community and dedicated
+    community for sending traps
+
+  2015-02-13: Simon Goldschmidt
+  * opt.h, memp.c: added hook LWIP_HOOK_MEMP_AVAILABLE() to get informed when
+    a memp pool was empty and an item is now available
+
+  2015-02-13: Simon Goldschmidt
+  * opt.h, pbuf.h/.c, etharp.c: Added the option PBUF_LINK_ENCAPSULATION_HLEN to
+    allocate additional header space for TX on netifs requiring additional headers
+
+  2015-02-12: chrysn
+  * timers.h/.c: introduce sys_timeouts_sleeptime (returns the time left before
+    the next timeout is due, for NO_SYS==1)
+
+  2015-02-11: Nick van Ijzendoorn
+  * opt.h, sockets.h/c: patch #7702 "Include ability to increase the socket number
+    with defined offset"
+
+  2015-02-11: Frederick Baksik
+  * opt.h, def.h, others: patch #8423 "arch/perf.h" should be made an optional item
+
+  2015-02-11: Simon Goldschmidt
+  * api_msg.c, opt.h: started to implement fullduplex sockets/netconns
+    (note that this is highly unstable yet!)
+
+  2015-01-17: Simon Goldschmidt
+  * api: allow enabling socket API without (public) netconn API - netconn API is
+    still used by sockets, but keeping it private (static) should allow better
+    compiler optimizations
+
+  2015-01-16: Simon Goldschmidt
+  * tcp_in.c: fixed bug #20506 "Initial congestion window is very small" again
+    by implementing the calculation formula from RFC3390
+
+  2014-12-10: Simon Goldschmidt
+  * api: added option LWIP_NETCONN_SEM_PER_THREAD to use a semaphore per thread
+    instead of using one per netconn and per select call
+
+  2014-12-08: Simon Goldschmidt
+  * ip6.h: fixed bug #43778: IPv6 header version not set on 16-bit platform
+    (macro IP6H_VTCFL_SET())
+
+  2014-12-08: Simon Goldschmidt
+  * icmp.c, ip4.c, pbuf.c, udp.c, pbuf.h: task #11472 Support PBUF_REF for RX
+    (IPv6 and IPv4/v6 reassembly might not work yet)
+
+  2014-11-06: Simon Goldschmidt
+  * sockets.c/.h, init.c: lwip_socket_init() is not needed any more
+    -> compatibility define
+
+  2014-09-16: Simon Goldschmidt
+  * dns.c, opt.h: reduced ram usage by parsing DNS responses in place
+
+  2014-09-16: Simon Goldschmidt
+  * pbuf.h/.c: added pbuf_take_at() and pbuf_put_at()
+
+  2014-09-15: Simon Goldschmidt
+  * dns.c: added source port randomization to make the DNS client more robust
+    (see bug #43144)
+
+  2013-09-02: Simon Goldschmidt
+  * arch.h and many other files: added optional macros PACK_STRUCT_FLD_8() and
+    PACK_STRUCT_FLD_S() to prevent gcc 4 from warning about struct members that
+    do not need packing
+
+  2013-08-19: Simon Goldschmidt
+  * netif.h: bug #42998: made NETIF_MAX_HWADDR_LEN overridable for some special
+    networks
+
+  2013-03-17: Simon Goldschmidt (patch by Ghobad Emadi)
+  * opt.h, etharp.c: Added LWIP_HOOK_ETHARP_GET_GW to implement IPv4 routing with
+    multiple gateways
+
+  2013-04-20: Fatih Asici
+  * opt.h, etharp.h/.c: patch #7993: Added support for transmitting packets
+    with VLAN headers via hook function LWIP_HOOK_VLAN_SET and to check them
+    via hook function LWIP_HOOK_VLAN_CHECK
+
+  2014-02-20: Simon Goldschmidt (based on patch by Artem Pisarenko)
+  * patch #7885: modification of api modules to support FreeRTOS-MPU
+    (don't pass stack-pointers to other threads)
+
+  2014-02-05: Simon Goldschmidt (patch by "xtian" and "alex_ab")
+  * patch #6537/#7858: TCP window scaling support
+
+  2014-01-17: Jiri Engelthaler
+  * icmp, icmp6, opt.h: patch #8027: Completed HW checksuming for IPv4 and
+    IPv6 ICMP's
+
+  2012-08-22: Sylvain Rochet
+  * New PPP stack for lwIP, developed in ppp-new branch.
+    Based from pppd 2.4.5, released 2009-11-17, with huge changes to match
+    code size and memory requirements for embedded devices, including:
+    - Gluing together the previous low-level PPP code in lwIP to pppd 2.4.5, which
+      is more or less what pppd sys-* files are, so that we get something working
+      using the unix port.
+    - Merged some patchs from lwIP Git repository which add interesting features
+      or fix bugs.
+    - Merged some patchs from Debian pppd package which add interesting features
+      or fix bugs.
+    - Ported PPP timeout handling to the lwIP timers system
+    - Disabled all the PPP code using filesystem access, replaced in necessary cases
+      to configuration variables.
+    - Disabled all the PPP code forking processes.
+    - Removed IPX support, lwIP does not support IPX.
+    - Ported and improved random module from the previous PPP port.
+    - Removed samba TDB (file-driven database) usage, because it needs a filesystem.
+    - MS-CHAP required a DES implementation, we added the latest PolarSSL DES
+      implementation which is under a BSD-ish license.
+    - Also switched to PolarSSL MD4,MD5,SHA1 implementations, which are meant to be
+      used in embedded devices with reduced memory footprint.
+    - Removed PPP configuration file parsing support. 
+    - Added macro definition EAP_SUPPORT to make EAP support optional.
+    - Added macro definition CHAP_SUPPORT to make CHAP support optional.
+    - Added macro definition MSCHAP_SUPPORT to make MSCHAP support optional.
+    - Added macro definition PAP_SUPPORT to make PAP support optional.
+    - Cleared all Linux syscall calls.
+    - Disabled demand support using a macro, so that it can be ported later.
+    - Disabled ECP support using a macro, so that it can be ported later.
+    - Disabled CCP support using a macro, so that it can be ported later.
+    - Disabled CBCP support using a macro, so that it can be ported later.
+    - Disabled LQR support using a macro, so that it can be ported later.
+    - Print packet debug feature optional, through PRINTPKT_SUPPORT
+    - Removed POSIX signal usage.
+    - Fully ported PPPoS code from the previous port.
+    - Fully ported PPPoE code from the previous port.
+    - Fully ported VJ compression protocol code from the previous port.
+    - Removed all malloc()/free() use from PPP, replaced by stack usage or PBUF.
+    - Disabled PPP server support using a macro, so that it can be ported later.
+    - Switched all PPP debug to lwIP debug system.
+    - Created PPP Control Block (PPP PCB), removed PPP unit integer everywhere,
+      removed all global variables everywhere, did everything necessary for
+      the PPP stack to support more than one PPP session (pppd only support
+      one session per process).
+    - Removed the statically allocated output buffer, now using PBUF.
+    - Improved structure size of all PPP modules, deep analyze of code to reduce
+      variables size to the bare minimum. Switched all boolean type (char type in
+      most architecture) to compiler generated bitfields.
+    - Added PPP IPv6 support, glued lwIP IPv6 support to PPP.
+    - Now using a persistent netif interface which can then be used in lwIP
+      functions requiring a netif.
+    - Now initializing PPP in lwip_init() function.
+    - Reworked completely the PPP state machine, so that we don't end up in
+      anymore in inconsistent state, especially with PPPoE.
+    - Improved the way we handle PPP reconnection after disconnect, cleaning
+      everything required so that we start the PPP connection again from a
+      clean state.
+    - Added PPP holdoff support, allow the lwIP user to wait a little bit before
+      reconnecting, prevents connection flood, especially when using PPPoL2TP.
+    - Added PPPoL2TP LAC support (a.k.a. UDP tunnels), adding a VPN client
+      feature to lwIP, L2TP being a widely used tunnel protocol.
+    - Switched all used PPP types to lwIP types (u8t, u16t, u32t, ...)
+    - Added PPP API "sequential" thread-safe API, based from NETIFAPI.
+
+  2011-07-21: Simon Goldschmidt
+  * sockets.c, opt.h: (bug #30185): added LWIP_FIONREAD_LINUXMODE that makes
+    ioctl/FIONREAD return the size of the next pending datagram.
+
+  2011-05-25: Simon Goldschmidt
+  * again nearly the whole stack, renamed ip.c to ip4.c, ip_addr.c to ip4_addr.c,
+    combined ipv4/ipv6 inet_chksum.c, added ip.h, ip_addr.h: Combined IPv4
+    and IPv6 code where possible, added defines to access IPv4/IPv6 in non-IP
+    code so that the code is more readable.
+
+  2011-05-17: Patch by Ivan Delamer (only checked in by Simon Goldschmidt)
+  * nearly the whole stack: Finally, we got decent IPv6 support, big thanks to
+    Ivan! (this is work in progress: we're just post release anyway :-)
+
+
+  ++ Bugfixes:
+
+  2016-08-23: Simon Goldschmidt
+  * etharp: removed ETHARP_TRUST_IP_MAC since it is insecure and we don't need
+    it any more after implementing unicast ARP renewal towards arp entry timeout
+
+  2016-07-20: Simon Goldschmidt
+  * memp.h/.c: fixed bug #48442 (memp stats don't work for MEMP_MEM_MALLOC)
+
+  2016-07-21: Simon Goldschmidt (patch by Ambroz Bizjak)
+  * tcp_in.c, tcp_out.c: fixed bug #48543 (TCP sent callback may prematurely
+    report sent data when only part of a segment is acked) and don't include
+    SYN/FIN in snd_buf counter
+
+  2016-07-19: Simon Goldschmidt
+  * etharp.c: fixed bug #48477 (ARP input packet might update static entry)
+
+  2016-07-11: Simon Goldschmidt
+  * tcp_in.c: fixed bug #48476 (TCP sent callback called wrongly due to picking
+    up old pcb->acked
+
+  2016-06-30: Simon Goldschmidt (original patch by Fabian Koch)
+  * tcp_in.c: fixed bug #48170 (Vulnerable to TCP RST spoofing)
+
+  2016-05-20: Dirk Ziegelmeier
+  * sntp.h/.c: Fix return value of sntp_getserver() call to return a pointer
+
+  2016-04-05: Simon Goldschmidt (patch by Philip Gladstone)
+  * udp.c: patch #8358: allow more combinations of listening PCB for IPv6
+
+  2016-04-05: Simon Goldschmidt
+  * netconn/socket API: fixed bug# 43739 (Accept not reporting errors about
+    aborted connections): netconn_accept() returns ERR_ABRT (sockets: ECONNABORTED)
+    for aborted connections, ERR_CLSD (sockets: EINVAL) if the listening netconn
+    is closed, which better seems to follow the standard.
+
+  2016-03-23: Florent Matignon
+  * dhcp.c: fixed bug #38203: DHCP options are not recorded in all DHCP ack messages
+
+  2016-03-22: Simon Goldschmidt
+  * tcp: changed accept handling to be done internally: the application does not
+    have to call tcp_accepted() any more. Instead, when delaying accept (e.g. sockets
+    do), call tcp_backlog_delayed()/tcp_backlog_accepted() (fixes bug #46696)
+
+  2016-03-22: Simon Goldschmidt
+  * dns.c: ignore dns response parsing errors, only abort resolving for correct
+    responses or error responses from correct server (bug #47459)
+
+  2016-03-17: Simon Goldschmidt
+  * api_msg.c: fixed bug #47448 (netconn/socket leak if RST is received during close)
+
+  2016-03-17: Joel Cunningham
+  * api_msg.c: don't fail closing a socket/netconn when failing to allocate the
+    FIN segment; blocking the calling thread for a while is better than risking
+    leaking a netconn/socket (see bug #46701)
+
+  2016-03-16: Joel Cunningham
+  * tcp_out.c: reset rto timer on fast retransmission
+
+  2016-03-16: Deomid Ryabkov
+  * tcp_out.c: fixed bug #46384 Segment size calculation bug with MSS != TCP_MSS
+
+  2016-03-05: Simon Goldschmidt
+  * err.h/.c, sockets.c: ERR_IF is not necessarily a fatal error
+
+  2015-11-19: fix by Kerem Hadimli
+  * sockets.c: fixed bug #46471: lwip_accept() leaks socket descriptors if new
+    netconn was already closed because of peer behavior
+
+  2015-11-12: fix by Valery Ushakov
+  * tcp_in.c: fixed bug #46365 tcp_accept_null() should call tcp_abort()
+
+  2015-10-02: Dirk Ziegelmeier/Simon Goldschmidt
+  * snmp: cleaned up snmp structs API (fixed race conditions from bug #46089,
+    reduce ram/rom usage of tables): incompatible change for private MIBs
+
+  2015-09-30: Simon Goldschmidt
+  * ip4_addr.c: fixed bug #46072: ip4addr_aton() does not check the number range
+    of all address parts
+
+  2015-08-28: Simon Goldschmidt
+  * tcp.c, tcp_in.c: fixed bug #44023: TCP ssthresh value is unclear: ssthresh
+    is set to the full send window for active open, too, and is updated once
+    after SYN to ensure the correct send window is used
+
+  2015-08-28: Simon Goldschmidt
+  * tcp: fixed bug #45559: Window scaling casts u32_t to u16_t without checks
+
+  2015-08-26: Simon Goldschmidt
+  * ip6_frag.h/.c: fixed bug bug #41009: IPv6 reassembly broken on 64-bit platforms:
+    define IPV6_FRAG_COPYHEADER==1 on these platforms to copy the IPv6 header
+    instead of referencing it, which gives more room for struct ip6_reass_helper
+
+  2015-08-25: Simon Goldschmidt
+  * sockets.c: fixed bug #45827: recvfrom: TCP window is updated with MSG_PEEK
+
+  2015-08-20: Manoj Kumar
+  * snmp_msg.h, msg_in.c: fixed bug #43790: Sending octet string of Length >255
+    from SNMP agent
+
+  2015-08-19: Jens Nielsen
+  * icmp.c, ip4.c, tcp_in.c, udp.c, raw.c: fixed bug #45120: Broadcast & multiple
+    interfaces handling
+
+  2015-08-19: Simon Goldschmidt (patch by "Sandra")
+  * dns.c: fixed bug #45004: dns response without answer might be discarded
+
+  2015-08-18: Chrysn
+  * timers.c: patch #8704 fix sys_timeouts_sleeptime function
+
+  2015-07-01: Erik Ekman
+  * puf.c: fixed bug #45454 (pbuf_take_at() skips write and returns OK if offset
+    is at start of pbuf in chain)
+
+  2015-05-19: Simon Goldschmidt
+  * dhcp.h/.c: fixed bugs #45140 and #45141 (dhcp was not stopped correctly after
+    fixing bug #38204)
+
+  2015-03-21: Simon Goldschmidt (patch by Homyak)
+  * tcp_in.c: fixed bug #44766 (LWIP_WND_SCALE: tcphdr->wnd was not scaled in
+    two places)
+
+  2015-03-21: Simon Goldschmidt
+  * tcp_impl.h, tcp.c, tcp_in.c: fixed bug #41318 (Bad memory ref in tcp_input()
+    after tcp_close())
+
+  2015-03-21: Simon Goldschmidt
+  * tcp_in.c: fixed bug #38468 (tcp_sent() not called on half-open connection for
+    data ACKed with the same ack as FIN)
+
+  2015-03-21: Simon Goldschmidt (patch by Christoffer Lind)
+  * dhcp.h/.c: fixed bug #38204 (DHCP lease time not handled correctly)
+
+  2015-03-20: Simon Goldschmidt
+  * dhcp.c: fixed bug #38714 (Missing option and client address in DHCPRELEASE message)
+
+  2015-03-19: Simon Goldschmidt
+  * api.h, tcpip.h, api_lib.c, api_msg.c: fixed race conditions in assigning
+    netconn->last_err (fixed bugs #38121 and #37676)
+
+  2015-03-09: Simon Goldschmidt
+  * ip4.c: fixed the IPv4 part of bug #43904 (ip_route() must detect linkup status)
+
+  2015-03-04: Simon Goldschmidt
+  * nd6.c: fixed bug #43784 (a host should send at least one Router Solicitation)
+
+  2015-03-04: Valery Ushakov
+  * ip6.c: fixed bug #41094 (Byte-order bug in IPv6 fragmentation header test)
+
+  2015-03-04: Zach Smith
+  * nd6.c: fixed bug #38153 (nd6_input() byte order issues)
+
+  2015-02-26: Simon Goldschmidt
+  * netif.c, tcp.h/.c: fixed bug #44378 (TCP connections are not aborted on netif
+    remove)
+
+  2015-02-25: Simon Goldschmidt
+  * ip4.c, etharp.c: fixed bug #40177 (System hangs when dealing with corrupted
+    packets), implemented task #12357 (Ensure that malicious packets don't
+    assert-fail): improved some pbuf_header calls to not assert-fail.
+
+  2015-02-25: patch by Joel Cunningham
+  * udp.h/.c, sockets.c: fixed bug #43028 (IP_MULTICAST_TTL affects unicast
+    datagrams)
+
+  2015-02-25: patch by Greg Renda
+  * ip4_frag.c: fixed bug #38210 (ip reassembly while remove oldest datagram)
+
+  2015-02-25: Simon Goldschmidt
+  * sockets.c: fixed bug #38165 (socket with mulicast): ensure igmp membership
+    are dropped when socket (not netconn!) is closed.
+
+  2015-02-25: Simon Goldschmidt
+  * ip4.h/.c, udp.c: fixed bug #38061 (wrong multicast routing in IPv4) by
+    adding an optional default netif for multicast routing
+
+  2015-02-25: Simon Goldschmidt
+  * netconn API: fixed that netconn_connect still used message passing for
+    LWIP_TCPIP_CORE_LOCKING==1
+
+  2015-02-22: patch by Jens Nielsen
+  * icmp.c: fixed bug #38803 (Source address in broadcast ping reply)
+
+  2015-02-22: Simon Goldschmidt
+  * udp.h, sockets.c: added proper accessor functions for pcb->multicast_ip
+    (previously used by get/setsockopt only)
+
+  2015-02-18: Simon Goldschmidt
+  * sockets.c: Fixed select not reporting received FIN as 'readable' in certain
+    rare cases (bug #43779: select(), close(), and TCP retransmission error)
+
+  2015-02-17: Simon Goldschmidt
+  * err.h, sockets.c, api_msg.c: fixed bug #38853 "connect() use a wrong errno":
+    return ERR_ALREADY/EALRADY during connect, ERR_ISCONN/EISCONN when already
+    connected
+
+  2015-02-17: Simon Goldschmidt
+  * tcp_impl.h, tcp_out.c, tcp.c, api_msg.c: fixed bug #37614 "Errors from
+    ipX_output are not processed". Now tcp_output(_segment) checks for the return
+    value of ipX_output and does not try to send more on error. A netif driver
+    can call tcp_txnow() (from tcpip_thread!) to try to send again if TX buffers
+    are available again.
+
+  2015-02-14: patches by Freddie Chopin
+  * snmp*: made community writable, fixed some const pointers
+
+  2015-02-13: Simon Goldschmidt
+  * msg_in.c: fixed bug #22070 "MIB_OBJECT_WRITE_ONLY not implemented in SNMP"
+
+  2015-02-12: Simon Goldschmidt
+  * ip.h, ip4.c, ip6.c: fixed bug #36403 "ip4_input() and ip6_input() always pass
+    inp to higher layers": now the accepting netif is passed up, but the input
+    netif is available through ip_current_input_netif() if required.
+
+  2015-02-11: patch by hichard
+  * tcpip.c: fixed bug #43094 "The function tcpip_input() forget to handle IPv6"
+
+  2015-02-10: Simon Goldschmidt
+  * netconn API: fixed that netconn_close/netconn_delete still used message passing
+    for LWIP_TCPIP_CORE_LOCKING==1
+
+  2015-02-10: Simon Goldschmidt
+  * netconn/socket api: fixed bug #44225 "closing TCP socket should time out
+    eventually", implemented task #6930 "Implement SO_LINGER": closing TCP sockets
+    times out after 20 seconds or after the configured SND_TIMEOUT or depending
+    on the linger settings.
+
+  2015-01-27: Simon Goldschmidt
+  * api_msg.c: fixed that SHUT_RD followed by SHUT_WR was different to SHUT_RDWR,
+    fixed return value of lwip_netconn_do_close on unconnected netconns
+
+  2015-01-17: Simon Goldschmidt
+  * sockets.c: fixed bug #43361 select() crashes with stale FDs
+
+  2015-01-17: Simon Goldschmidt
+  * sockets.c/.h, memp_std.h: fixed bug #40788 "lwip_setsockopt_internal() crashes"
+    by rewriting set/getsockopt functions to combine checks with the actual code
+    and add more NULL checks; this also fixes that CORE_LOCKING used message
+    passing for set/getsockopt.
+
+  2014-12-19: Simon Goldschmidt
+  * opt.h, dhcp.h/.c: prevent dhcp from starting when netif link is down (only
+    when LWIP_DHCP_CHECK_LINK_UP==1, which is disabled by default for
+    compatibility reasons)
+
+  2014-12-17: Simon Goldschmidt
+  * tcp_out.c: fixed bug #43840 Checksum error for TCP_CHECKSUM_ON_COPY==1 for
+    no-copy data with odd length
+
+  2014-12-10: Simon Goldschmidt
+  * sockets.c, tcp.c, others: fixed bug #43797 set/getsockopt: SO_SNDTIMEO/SO_RCVTIMEO
+    take int as option but should take timeval (LWIP_SO_SNDRCVTIMEO_STANDARD==0 can
+    be used to revert to the old 'winsock' style behaviour)
+    Fixed implementation of SO_ACCEPTCONN to just look at the pcb state
+
+  2014-12-09: Simon Goldschmidt
+  * ip4.c: fixed bug #43596 IGMP queries from 0.0.0.0 are discarded
+
+  2014-10-21: Simon Goldschmidt (patch by Joel Cunningham and Albert Huitsing)
+  * sockts.c: fixed bugs #41495 Possible threading issue in select() and #43278
+    event_callback() handle context switch when calling sys_sem_signal()
+
+  2014-10-21: Simon Goldschmidt
+  * api_msg.c: fixed bug #38219 Assert on TCP netconn_write with sndtimeout set
+
+  2014-09-16: Kevin Cernekee
+  * dns.c: patch #8480 Fix handling of dns_seqno wraparound
+
+  2014-09-16: Simon Goldschmidt
+  * tcp_out.c: fixed bug #43192 tcp_enqueue_flags() should not check TCP_SND_QUEUELEN
+    when sending FIN
+
+  2014-09-03: Simon Goldschmidt
+  * msg_in.c: fixed bug #39355 SNMP Memory Leak in case of error
+
+  2014-09-02: Simon Goldschmidt
+  * err.h/.c, sockets.c, api_msg.c: fixed bug #43110 call getpeername() before
+    listen() will cause a error
+
+  2014-09-02: Simon Goldschmidt
+  * sockets.c: fixed bug #42117 lwip_fcntl does not set errno
+
+  2014-09-02: Simon Goldschmidt
+  * tcp.c: fixed bug #42299 tcp_abort() leaves freed pcb on tcp_bound_pcbs list
+
+  2014-08-20: Simon Goldschmidt
+  * dns.c: fixed bug #42987 lwIP is vulnerable to DNS cache poisoning due to
+    non-randomized TXIDs
+
+  2014-06-03: Simon Goldschmidt
+  * tcp_impl.h, tcp_in.c: fixed bug #37969 SYN packet dropped as short packet in
+    tcp_input function
+
+  2014-05-20: Simon Goldschmidt
+  * tcp_out.c: fixed bug #37184 tcp_write problem for pcbs in the SYN_SENT state
+
+  2014-05-19: Simon Goldschmidt
+  * *.h: Fixed bug #35874 reserved identifier violation (removed leading underscores
+    from header include guards)
+
+  2014-04-08: Simon Goldschmidt
+  * tcp.c: Fixed bug #36167 tcp server crash when client closes (maximum window)
+
+  2014-04-06: Simon Goldschmidt
+  * tcp_in.c: Fixed bug #36210 lwIP does not elicit an empty ACK when received
+    unacceptable ACK
+
+  2014-04-06: Simon Goldschmidt
+  * dhcp.c, ip4.c/.h, ip6.c/.h, udp.c/.h, ip.h: Fixed bug #41787 DHCP Discovery
+    is invalid when an IP is set to thet netif.
+
+  2014-03-14: Simon Goldschmidt
+  * tcp_out.c: Fixed bug #36153 TCP Cheksum error if LWIP_CHECKSUM_ON_COPY=1
+
+  2014-03-11: Simon Goldschmidt (patch by Mason)
+  * opt.h, sockets.c: fixed bug #35928 BSD sockets functions must set errno for
+    POSIX-compliance
+
+  2014-02-27: Simon Goldschmidt
+  * dhcp.c: fixed bug #40303 DHCP xid renewed when sending a DHCPREQUEST
+
+  2014-02-27: Simon Goldschmidt
+  * raw.c: fixed bug #41680 raw socket can not receive IPv6 packet when
+    IP_SOF_BROADCAST_RECV==1
+
+  2014-02-27: Simon Goldschmidt
+  * api_msg.c, sockets.c: fixed bug #38404 getpeeraddr returns success on
+    unconnected/listening TCP sockets
+
+  2014-02-27: Simon Goldschmidt
+  * sockets.c: fixed bug #41729 Some socket functions return Exyz instead of -1
+
+  2014-02-25: Simon Goldschmidt
+  * ip4.c: fixed bug #39514 ip_route() may return an IPv6-only interface
+
+  2014-02-25: Simon Goldschmidt, patch by Fatih Asici
+  * pbuf.c: fixed bug #39356 Wrong increment in pbuf_memfind()
+
+  2014-02-25: Simon Goldschmidt
+  * netif.c/.h, udp.c: fixed bug #39225 udp.c uses netif_matches_ip6_addr() incorrectly;
+    renamed function netif_matches_ip6_addr() to netif_get_ip6_addr_match()
+
+  2014-02-25: Simon Goldschmidt
+  * igmp.c: fixed bug #39145 IGMP membership report for 224.0.0.1
+
+  2014-02-22: Simon Goldschmidt (patch by Amir Shalem)
+  * etharp.c, opt.h: fixed bug #34681 Limit ARP queue length by ARP_QUEUE_LEN (=3)
+
+  2014-02-22: Simon Goldschmidt (patch by Amir Shalem)
+  * etharp.h/.c: fixed bug #34682 Limit ARP request flood for unresolved entry
+
+  2014-02-20: Simon Goldschmidt
+  * tcp_out.c: fixed bug #39683 Assertion "seg->tcphdr not aligned" failed with
+    MEM_ALIGNMENT = 8
+
+  2014-02-20: Simon Goldschmidt
+  * sockets.c: fixed bug #39882 No function shall set errno to 0
+
+  2014-02-20: Simon Goldschmidt
+  * mib_structs.c: fixed bug #40050 SNMP problem with MIB arrays > 255
+
+  2014-02-20: Simon Goldschmidt
+  * api.h, sockets.c: fixed bug #41499 netconn::recv_avail can overflow
+
+  2014-01-08: Stathis Voukelatos
+  * memp_std.h: patch #7928 Fixed size calculation in MALLOC memory pool
+    creation macro
+
+  2014-01-18: Brian Fahs
+  * tcp_out.c: patch #8237: tcp_rexmit_rto fails to update pcb->unsent_oversize
+    when necessary
+
+  2014-01-17: Grant Erickson, Jay Logue, Simon Goldschmidt
+  * ipv6.c, netif.c: patch #7913 Enable Support for IPv6 Loopback
+
+  2014-01-16: Stathis Voukelatos
+  * netif.c: patch #7902 Fixed netif_poll() operation when LWIP_LOOPBACK_MAX_PBUFS > 0
+
+  2014-01-14: "Freddie Chopin"
+  * snmp.h, mib2.c: fixed constness and spelling of sysdescr
+
+  2014-01-14: Simon Goldschmidt (patch by Thomas Faber)
+  * tcpip.c: patch #8241: Fix implicit declaration of ip_input with
+    LWIP_TCPIP_CORE_LOCKING_INPUT disabled
+
+  2014-01-14: chrysn
+  * timers.c: patch #8244 make timeouts usable reliably from outside of the
+    timeout routine
+
+  2014-01-10: Simon Goldschmidt
+  * ip_frag.c, ip6_frag.c: fixed bug #41041 Potential use-after-free in IPv6 reassembly
+
+  2014-01-10: Simon Goldschmidt
+  * memp.c: fixed bug #41188 Alignment error in memp_init() when MEMP_SEPARATE_POOLS==1
+
+  2014-01-10: Simon Goldschmidt
+  * tcp.c: fixed bug #39898 tcp_fasttmr() possible lock due to infinte queue process loop
+
+  2013-06-29: Simon Goldschmidt
+  * inet.h, sockets.h: partially fixed bug #37585: IPv6 compatibility (in socket structs)
+
+  2013-06-29: Simon Goldschmidt
+  * inet6.h: bug #37585/task #12600: fixed struct in6_addr.s6_addr to conform to spec
+
+  2013-04-24: patch by Liam <morepork>
+  * api_msg.c: patch #8008 Fix a potential null pointer dereference in assert
+
+  2013-04-24: Simon Goldschmidt
+  * igmp.c: fixed possible division by zero
+
+  2013-04-24: Simon Goldschmidt
+  * ip6.h, some ipv6 C files: fixed bug #38526 Coverity: Recursive Header Inclusion in ip6.h
+
+  2013-04-24: Simon Goldschmidt (patch by Emil Ljungdahl):
+  * netif.c: fixed bug #38586 netif_loop_output() "deadlocks"
+
+  2013-01-15: Simon Goldschmidt
+  * ip4.c: fixed bug #37665 ip_canforward operates on address in wrong byte order
+
+  2013-01-15: Simon Goldschmidt
+  * pbuf.h: fixed bug #38097 pbuf_free_ooseq() warning
+
+  2013-01-14: Simon Goldschmidt
+  * dns.c: fixed bug #37705 Possible memory corruption in DNS query
+
+  2013-01-11: Simon Goldschmidt
+  * raw.c: fixed bug #38066 Raw pcbs can alter packet without eating it
+
+  2012-08-22: Simon Goldschmidt
+  * memp.c: fixed bug #37166: memp_sanity check loops itself
+
+  2012-08-13: Simon Goldschmidt
+  * dhcp.c: fixed bug #36645: Calling dhcp_release before dhcp_start
+    dereferences NULL
+
+  2012-08-13: Simon Goldschmidt
+  * msg_out.c: fixed bug #36840 snmp_send_trap() NULL de-reference if traps
+    configured but no interfaces available
+
+  2012-08-13: Simon Goldschmidt
+  * dns.c: fixed bug #36899 DNS TTL 0 is cached for a long time
+
+  2012-05-11: Simon Goldschmidt (patch by Marty)
+  * memp.c: fixed bug #36412: memp.c does not compile when
+    MEMP_OVERFLOW_CHECK > zero and MEMP_SEPARATE_POOLS == 1
+
+  2012-05-03: Simon Goldschmidt (patch by Sylvain Rochet)
+  * ppp.c: fixed bug #36283 (PPP struct used on header size computation and
+    not packed)
+
+  2012-05-03: Simon Goldschmidt (patch by David Empson)
+  * ppp.c: fixed bug #36388 (PPP: checksum-only in last pbuf leads to pbuf with
+    zero length)
+
+  2012-03-25: Simon Goldschmidt
+  * api_msg.c: Fixed bug #35817: do_connect() invalidly signals op_completed
+    for UDP/RAW with LWIP_TCPIP_CORE_LOCKING==1
+
+  2012-03-25: Simon Goldschmidt
+  * api_msg.h, api_lib.c, api_msg.c, netifapi.c: fixed bug #35931: Name space
+    pollution in api_msg.c and netifapi.c
+
+  2011-08-24: Simon Goldschmidt
+  * inet6.h: fixed bug #34124 struct in6_addr does not conform to the standard
+
+
+
+(STABLE-1.4.1)
+
+  ++ New features:
+
+  2012-03-25: Simon Goldschmidt (idea by Mason)
+  * posix/*: added posix-compatibility include files posix/netdb.h and posix/sys/socket.h
+    which are a simple wrapper to the correct lwIP include files.
+ 
+  2012-01-16: Simon Goldschmidt
+  * opt.h, icmp.c: Added option CHECKSUM_GEN_ICMP
+
+  2011-12-17: Simon Goldschmidt
+  * ip.h: implemented API functions to access so_options of IP pcbs (UDP, TCP, RAW)
+    (fixes bug #35061)
+
+  2011-09-27: Simon Goldschmidt
+  * opt.h, tcp.c, tcp_in.c: Implemented limiting data on ooseq queue (task #9989)
+    (define TCP_OOSEQ_MAX_BYTES / TCP_OOSEQ_MAX_PBUFS in lwipopts.h)
+
+  2011-09-21: Simon Goldschmidt
+  * opt.h, api.h, api_lib.c, api_msg.h/.c, sockets.c: Implemented timeout on
+    send (TCP only, bug #33820)
+
+  2011-09-21: Simon Goldschmidt
+  * init.c: Converted runtime-sanity-checks into compile-time checks that can
+    be disabled (since runtime checks can often not be seen on embedded targets)
+
+  2011-09-11: Simon Goldschmidt
+  * ppp.h, ppp_impl.h: splitted ppp.h to an internal and external header file
+    to get a clear separation of which functions an application or port may use
+    (task #11281)
+
+ 2011-09-11: Simon Goldschmidt
+  * opt.h, tcp_impl.h, tcp.c, udp.h/.c: Added a config option to randomize
+    initial local TCP/UDP ports (so that different port ranges are used after
+    a reboot; bug #33818; this one added tcp_init/udp_init functions again)
+
+  2011-09-03: Simon Goldschmidt
+  * dhcp.c: DHCP uses LWIP_RAND() for xid's (bug #30302)
+
+  2011-08-24: Simon Goldschmidt
+  * opt.h, netif.h/.c: added netif remove callback (bug #32397)
+
+  2011-07-26: Simon Goldschmidt
+  * etharp.c: ETHARP_SUPPORT_VLAN: add support for an external VLAN filter
+    function instead of only checking for one VLAN (define ETHARP_VLAN_CHECK_FN)
+
+  2011-07-21: Simon Goldschmidt (patch by hanhui)
+  * ip4.c, etharp.c, pbuf.h: bug #33634 ip_forward() have a faulty behaviour:
+    Added pbuf flags to mark incoming packets as link-layer broadcast/multicast.
+    Also added code to allow ip_forward() to forward non-broadcast packets to
+    the input netif (set IP_FORWARD_ALLOW_TX_ON_RX_NETIF==1).
+
+  2011-06-26: Simon Goldschmidt (patch by Cameron Gutman)
+  * tcp.c, tcp_out.c: bug #33604: added some more asserts to check that
+    pcb->state != LISTEN
+
+   2011-05-14: Simon Goldschmidt (patch by St�phane Lesage)
+  * tcpip.c/.h: patch #7449 allow tcpip callback from interrupt with static
+    memory message
+
+
+  ++ Bugfixes:
+
+  2012-09-26: Simon Goldschmidt
+  * api_msg.c: fixed bug #37405 'err_tcp()' uses already freed 'netconn' object
+
+  2012-09-26: patch by Henrik Persson
+  * dhcp.c: patch #7843 Fix corner case with dhcp timeouts
+
+  2012-09-26: patch by Henrik Persson
+  * dhcp.c: patch #7840 Segfault in dhcp_parse_reply if no end marker in dhcp packet
+
+  2012-08-22: Simon Goldschmidt
+  * memp.c: fixed bug #37166: memp_sanity check loops itself
+
+  2012-05-08: Simon Goldschmidt
+  * tcp_out.c: fixed bug: #36380 unsent_oversize mismatch in 1.4.1RC1 (this was
+    a debug-check issue only)
+
+  2012-03-27: Simon Goldschmidt
+  * vj.c: fixed bug #35756 header length calculation problem in ppp/vj.c
+
+  2012-03-27: Simon Goldschmidt (patch by Mason)
+  * tcp_out.c: fixed bug #35945: SYN packet should provide the recv MSS not the
+    send MSS
+
+  2012-03-22: Simon Goldschmidt
+  * ip4.c: fixed bug #35927: missing refragmentaion in ip_forward
+ 
+  2012-03-20: Simon Goldschmidt (patch by Mason)
+  * netdb.c: fixed bug #35907: lwip_gethostbyname_r returns an invalid h_addr_list
+ 
+  2012-03-12: Simon Goldschmidt (patch by Bostjan Meglic)
+  * ppp.c: fixed bug #35809: PPP GetMask(): Compiler warning on big endian,
+    possible bug on little endian system
+
+  2012-02-23: Simon Goldschmidt
+  * etharp.c: fixed bug #35595: Impossible to send broadcast without a gateway
+    (introduced when fixing bug# 33551)
+
+  2012-02-16: Simon Goldschmidt
+  * ppp.c: fixed pbuf leak when PPP session is aborted through pppSigHUP()
+    (bug #35541: PPP Memory Leak)
+
+  2012-02-16: Simon Goldschmidt
+  * etharp.c: fixed bug #35531: Impossible to send multicast without a gateway
+    (introduced when fixing bug# 33551)
+
+  2012-02-16: Simon Goldschmidt (patch by St�phane Lesage)
+  * msg_in.c, msg_out.c: fixed bug #35536 SNMP: error too big response is malformed
+
+  2012-02-15: Simon Goldschmidt
+  * init.c: fixed bug #35537: MEMP_NUM_* sanity checks should be disabled with
+    MEMP_MEM_MALLOC==1
+
+  2012-02-12: Simon Goldschmidt
+  * tcp.h, tcp_in.c, tcp_out.c: partly fixed bug #25882: TCP hangs on
+    MSS > pcb->snd_wnd (by not creating segments bigger than half the window)
+
+  2012-02-11: Simon Goldschmidt
+  * tcp.c: fixed bug #35435: No pcb state check before adding it to time-wait
+    queue while closing
+
+  2012-01-22: Simon Goldschmidt
+  * tcp.c, tcp_in.c: fixed bug #35305: pcb may be freed too early on shutdown(WR)
+
+  2012-01-21: Simon Goldschmidt
+  * tcp.c: fixed bug #34636: FIN_WAIT_2 - Incorrect shutdown of TCP pcb
+
+  2012-01-20: Simon Goldschmidt
+  * dhcp.c: fixed bug #35151: DHCP asserts on incoming option lengths
+
+ 2012-01-20: Simon Goldschmidt
+  * pbuf.c: fixed bug #35291: NULL pointer in pbuf_copy
+
+  2011-11-25: Simon Goldschmidt
+  * tcp.h/.c, tcp_impl.h, tcp_in.c: fixed bug #31177: tcp timers can corrupt
+    tcp_active_pcbs in some cases
+
+  2011-11-23: Simon Goldschmidt
+  * sys.c: fixed bug #34884: sys_msleep() body needs to be surrounded with
+    '#ifndef sys_msleep'
+
+  2011-11-22: Simon Goldschmidt
+  * netif.c, etharp.h/.c: fixed bug #34684: Clear the arp table cache when
+    netif is brought down
+
+  2011-10-28: Simon Goldschmidt
+  * tcp_in.c: fixed bug #34638: Dead code in tcp_receive - pcb->dupacks
+
+  2011-10-23: Simon Goldschmidt
+  * mem.c: fixed bug #34429: possible memory corruption with
+    LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT set to 1
+
+  2011-10-18: Simon Goldschmidt
+  * arch.h, netdb.c: fixed bug #34592: lwip_gethostbyname_r uses nonstandard
+    error value
+
+  2011-10-18: Simon Goldschmidt
+  * opt.h: fixed default values of TCP_SNDLOWAT and TCP_SNDQUEUELOWAT for small
+    windows (bug #34176 select after non-blocking send times out)
+
+  2011-10-18: Simon Goldschmidt
+  * tcp_impl.h, tcp_out.c: fixed bug #34587: TCP_BUILD_MSS_OPTION doesn't
+    consider netif->mtu, causes slow network
+
+  2011-10-18: Simon Goldschmidt
+  * sockets.c: fixed bug #34581 missing parentheses in udplite sockets code
+
+  2011-10-18: Simon Goldschmidt
+  * sockets.h: fixed bug #34580 fcntl() is missing in LWIP_COMPAT_SOCKETS
+
+  2011-10-17: Simon Goldschmidt
+  * api_msg.c: fixed bug #34569: shutdown(SHUT_WR) crashes netconn/socket api
+
+  2011-10-13: Simon Goldschmidt
+  * tcp_in.c, tcp_out.c: fixed bug #34517 (persist timer is started although no
+    zero window is received) by starting the persist timer when a zero window is
+    received, not when we have more data queued for sending than fits into the
+    window
+
+  2011-10-13: Simon Goldschmidt
+  * def.h, timers.c: fixed bug #34541: LWIP_U32_DIFF is unnecessarily complex
+
+  2011-10-13: Simon Goldschmidt
+  * sockets.c, api_lib.c: fixed bug #34540: compiler error when CORE_LOCKING is
+    used and not all protocols are enabled
+
+  2011-10-12: Simon Goldschmidt
+  * pbuf.c: fixed bug #34534: Error in sending fragmented IP if MEM_ALIGNMENT > 4
+
+  2011-10-09: Simon Goldschmidt
+  * tcp_out.c: fixed bug #34426: tcp_zero_window_probe() transmits incorrect
+    byte value when pcb->unacked != NULL
+
+  2011-10-09: Simon Goldschmidt
+  * ip4.c: fixed bug #34447 LWIP_IP_ACCEPT_UDP_PORT(dst_port) wrong
+
+  2011-09-27: Simon Goldschmidt
+  * tcp_in.c, tcp_out.c: Reset pcb->unsent_oversize in 2 more places...
+
+  2011-09-27: Simon Goldschmidt
+  * tcp_in.c: fixed bug #28288: Data after FIN in oos queue
+
+  2011-09-27: Simon Goldschmidt
+  * dhcp.c: fixed bug #34406 dhcp_option_hostname() can overflow the pbuf
+
+  2011-09-24: Simon Goldschmidt
+  * mem.h: fixed bug #34377 MEM_SIZE_F is not defined if MEM_LIBC_MALLOC==1
+
+  2011-09-23: Simon Goldschmidt
+  * pbuf.h, tcp.c, tcp_in.c: fixed bug #33871: rejecting TCP_EVENT_RECV() for
+    the last packet including FIN can lose data
+
+  2011-09-22: Simon Goldschmidt
+  * tcp_impl.h: fixed bug #34355: nagle does not take snd_buf/snd_queuelen into
+    account
+
+  2011-09-21: Simon Goldschmidt
+  * opt.h: fixed default value of TCP_SND_BUF to not violate the sanity checks
+    in init.c
+
+  2011-09-20: Simon Goldschmidt
+  * timers.c: fixed bug #34337 (possible NULL pointer in sys_check_timeouts)
+
+  2011-09-11: Simon Goldschmidt
+  * tcp_out.c: use pcb->mss instead of TCP_MSS for preallocate mss-sized pbufs
+    (bug #34019)
+
+  2011-09-09: Simon Goldschmidt
+  * udp.c: fixed bug #34072: UDP broadcast is received from wrong UDP pcb if
+    udp port matches
+
+  2011-09-03: Simon Goldschmidt
+  * tcp_in.c: fixed bug #33952 PUSH flag in incoming packet is lost when packet
+    is aggregated and sent to application
+
+  2011-09-01: Simon Goldschmidt
+  * opt.h: fixed bug #31809 LWIP_EVENT_API in opts.h is inconsistent compared
+    to other options
+
+  2011-09-01: Simon Goldschmidt
+  * tcp_in.c: fixed bug #34111 RST for ACK to listening pcb has wrong seqno
+
+  2011-08-24: Simon Goldschmidt
+  * api_msg.c, sockets.c: fixed bug #33956 Wrong error returned when calling
+    accept() on UDP connections
+
+  2011-08-24: Simon Goldschmidt
+  * sockets.h: fixed bug #34057 socklen_t should be a typedef
+
+  2011-08-24: Simon Goldschmidt
+  * pbuf.c: fixed bug #34112 Odd check in pbuf_alloced_custom (typo)
+
+  2011-08-24: Simon Goldschmidt
+  * dhcp.c: fixed bug #34122 dhcp: hostname can overflow
+
+  2011-08-24: Simon Goldschmidt
+  * netif.c: fixed bug #34121 netif_add/netif_set_ipaddr fail on NULL ipaddr
+
+  2011-08-22: Simon Goldschmidt
+  * tcp_out.c: fixed bug #33962 TF_FIN not always set after FIN is sent. (This
+    merely prevents nagle from not transmitting fast after closing.)
+
+  2011-07-22: Simon Goldschmidt
+  * api_lib.c, api_msg.c, sockets.c, api.h: fixed bug #31084 (socket API returns
+    always EMSGSIZE on non-blocking sockets if data size > send buffers) -> now
+    lwip_send() sends as much as possible for non-blocking sockets
+
+  2011-07-22: Simon Goldschmidt
+  * pbuf.c/.h, timers.c: freeing ooseq pbufs when the pbuf pool is empty implemented
+    for NO_SYS==1: when not using sys_check_timeouts(), call PBUF_CHECK_FREE_OOSEQ()
+    at regular intervals from main level.
+
+  2011-07-21: Simon Goldschmidt
+  * etharp.c: fixed bug #33551 (ARP entries may time out although in use) by
+    sending an ARP request when an ARP entry is used in the last minute before
+    it would time out.
+
+  2011-07-04: Simon Goldschmidt
+  * sys_arch.txt: Fixed documentation after changing sys arch prototypes for 1.4.0.
+
+  2011-06-26: Simon Goldschmidt
+  * tcp.c: fixed bug #31723 (tcp_kill_prio() kills pcbs with the same prio) by
+    updating its documentation only.
+
+ 2011-06-26: Simon Goldschmidt
+  * mem.c: fixed bug #33545: With MEM_USE_POOLS==1, mem_malloc can return an
+    unaligned pointer.
+
+  2011-06-26: Simon Goldschmidt
+  * mem.c: fixed bug #33544 "warning in mem.c in lwip 1.4.0 with NO_SYS=1"
+
+   2011-05-25: Simon Goldschmidt
+  * tcp.c: fixed bug #33398 (pointless conversion when checking TCP port range)
+
+
+
+(STABLE-1.4.0)
+
+  ++ New features:
+
+  2011-03-27: Simon Goldschmidt
+  * tcp_impl.h, tcp_in.c, tcp_out.c: Removed 'dataptr' from 'struct tcp_seg' and
+    calculate it in tcp_zero_window_probe (the only place where it was used).
+
+  2010-11-21: Simon Goldschmidt
+  * dhcp.c/.h: Added a function to deallocate the struct dhcp from a netif
+    (fixes bug #31525).
+
+  2010-07-12: Simon Goldschmidt (patch by Stephane Lesage)
+  * ip.c, udp.c/.h, pbuf.h, sockets.c: task #10495: Added support for
+    IP_MULTICAST_LOOP at socket- and raw-API level.
+
+  2010-06-16: Simon Goldschmidt
+  * ip.c: Added an optional define (LWIP_IP_ACCEPT_UDP_PORT) that can allow
+    link-layer-addressed UDP traffic to be received while a netif is down (just
+    like DHCP during configuration)
+
+  2010-05-22: Simon Goldschmidt
+  * many many files: bug #27352: removed packing from ip_addr_t, the packed
+    version is now only used in protocol headers. Added global storage for
+    current src/dest IP address while in input functions.
+
+  2010-05-16: Simon Goldschmidt
+  * def.h: task #10391: Add preprocessor-macros for compile-time htonl
+    calculation (and use them throughout the stack where applicable)
+
+  2010-05-16: Simon Goldschmidt
+  * opt.h, memp_std.h, memp.c, ppp_oe.h/.c: PPPoE now uses its own MEMP pool
+    instead of the heap (moved struct pppoe_softc from ppp_oe.c to ppp_oe.h)
+
+  2010-05-16: Simon Goldschmidt
+  * opt.h, memp_std.h, dns.h/.c: DNS_LOCAL_HOSTLIST_IS_DYNAMIC uses its own
+    MEMP pool instead of the heap
+
+  2010-05-13: Simon Goldschmidt
+  * tcp.c, udp.c: task #6995: Implement SO_REUSEADDR (correctly), added
+    new option SO_REUSE_RXTOALL to pass received UDP broadcast/multicast
+    packets to more than one pcb.
+
+  2010-05-02: Simon Goldschmidt
+  * netbuf.h/.c, sockets.c, api_msg.c: use checksum-on-copy for sending
+    UDP data for LWIP_NETIF_TX_SINGLE_PBUF==1
+
+  2010-04-30: Simon Goldschmidt
+  * udp.h/.c, pbuf.h/.c: task #6849: added udp_send(_to/_if) functions that
+    take a precalculated checksum, added pbuf_fill_chksum() to copy data
+    into a pbuf and at the same time calculating the checksum for that data
+
+  2010-04-29: Simon Goldschmidt
+  * ip_addr.h, etharp.h/.c, autoip.c: Create overridable macros for copying
+    2-byte-aligned IP addresses and MAC addresses
+
+  2010-04-28: Patch by Bill Auerbach
+  * ip.c: Inline generating IP checksum to save a function call
+
+  2010-04-14: Simon Goldschmidt
+  * tcpip.h/.c, timers.c: Added an overridable define to get informed when the
+    tcpip_thread processes messages or timeouts to implement a watchdog.
+
+  2010-03-28: Simon Goldschmidt
+  * ip_frag.c: create a new (contiguous) PBUF_RAM for every outgoing
+    fragment if LWIP_NETIF_TX_SINGLE_PBUF==1
+
+  2010-03-27: Simon Goldschmidt
+  * etharp.c: Speedup TX by moving code from find_entry to etharp_output/
+    etharp_query to prevent unnecessary function calls (inspired by
+    patch #7135).
+
+  2010-03-20: Simon Goldschmidt
+  * opt.h, tcpip.c/.h: Added an option to disable tcpip_(un)timeout code
+    since the linker cannot do this automatically to save space.
+
+  2010-03-20: Simon Goldschmidt
+  * opt.h, etharp.c/.h: Added support for static ARP table entries
+
+  2010-03-14: Simon Goldschmidt
+  * tcp_impl.h, tcp_out.c, inet_chksum.h/.c: task #6849: Calculate checksum
+    when creating TCP segments, not when (re-)transmitting them.
+
+  2010-03-07: Simon Goldschmidt
+  * sockets.c: bug #28775 (select/event_callback: only check select_cb_list
+    on change) plus use SYS_LIGHTWEIGHT_PROT to protect the select code.
+    This should speed up receiving data on sockets as the select code in
+    event_callback is only executed when select is waiting.
+
+  2010-03-06: Simon Goldschmidt
+  * tcp_out.c: task #7013 (Create option to have all packets delivered to
+    netif->output in one piece): Always copy to try to create single pbufs
+    in tcp_write.
+
+  2010-03-06: Simon Goldschmidt
+  * api.h, api_lib.c, sockets.c: task #10167 (sockets: speed up TCP recv
+    by not allocating a netbuf): added function netconn_recv_tcp_pbuf()
+    for tcp netconns to receive pbufs, not netbufs; use that function
+    for tcp sockets.
+
+  2010-03-05: Jakob Ole Stoklundsen / Simon Goldschmidt
+  * opt.h, tcp.h, tcp_impl.h, tcp.c, tcp_in.c, tcp_out.c: task #7040:
+    Work on tcp_enqueue: Don't waste memory when chaining segments,
+    added option TCP_OVERSIZE to prevent creating many small pbufs when
+    calling tcp_write with many small blocks of data. Instead, pbufs are
+    allocated larger than needed and the space is used for later calls to
+    tcp_write.
+
+  2010-02-21: Simon Goldschmidt
+  * stats.c/.h: Added const char* name to mem- and memp-stats for easier
+    debugging.
+
+  2010-02-21: Simon Goldschmidt
+  * tcp.h (and usages), added tcp_impl.h: Splitted API and internal
+    implementation of tcp to make API usage cleare to application programmers
+
+  2010-02-14: Simon Goldschmidt/Stephane Lesage
+  * ip_addr.h: Improved some defines working on ip addresses, added faster
+    macro to copy addresses that cannot be NULL
+
+  2010-02-13: Simon Goldschmidt
+  * api.h, api_lib.c, api_msg.c, sockets.c: task #7865 (implement non-
+    blocking send operation)
+
+  2010-02-12: Simon Goldschmidt
+  * sockets.c/.h: Added a minimal version of posix fctl() to have a
+    standardised way to set O_NONBLOCK for nonblocking sockets.
+
+  2010-02-12: Simon Goldschmidt
+  * dhcp.c/.h, autoip.c/.h: task #10139 (Prefer statically allocated
+    memory): added autoip_set_struct() and dhcp_set_struct() to let autoip
+    and dhcp work with user-allocated structs instead of callin mem_malloc
+
+  2010-02-12: Simon Goldschmidt/Jeff Barber
+  * tcp.c/h: patch #6865 (SO_REUSEADDR for TCP): if pcb.so_options has
+    SOF_REUSEADDR set, allow binding to endpoint in TIME_WAIT
+
+  2010-02-12: Simon Goldschmidt
+  * sys layer: task #10139 (Prefer statically allocated memory): converted
+    mbox and semaphore functions to take pointers to sys_mbox_t/sys_sem_t;
+    converted sys_mbox_new/sys_sem_new to take pointers and return err_t;
+    task #7212: Add Mutex concept in sys_arch (define LWIP_COMPAT_MUTEX
+    to let sys.h use binary semaphores instead of mutexes - as before)
+
+  2010-02-09: Simon Goldschmidt (Simon Kallweit)
+  * timers.c/.h: Added function sys_restart_timeouts() from patch #7085
+    (Restart system timeout handling)
+
+  2010-02-09: Simon Goldschmidt
+  * netif.c/.h, removed loopif.c/.h: task #10153 (Integrate loopif into
+    netif.c) - loopif does not have to be created by the port any more,
+    just define LWIP_HAVE_LOOPIF to 1.
+
+  2010-02-08: Simon Goldschmidt
+  * inet.h, ip_addr.c/.h: Added reentrant versions of inet_ntoa/ipaddr_ntoa
+    inet_ntoa_r/ipaddr_ntoa_r
+
+  2010-02-08: Simon Goldschmidt
+  * netif.h: Added netif_s/get_igmp_mac_filter() macros
+
+  2010-02-05: Simon Goldschmidt
+  * netif.h: Added function-like macros to get/set the hostname on a netif
+
+  2010-02-04: Simon Goldschmidt
+  * nearly every file: Replaced struct ip_addr by typedef ip_addr_t to
+    make changing the actual implementation behind the typedef easier.
+
+  2010-02-01: Simon Goldschmidt
+  * opt.h, memp_std.h, dns.h, netdb.c, memp.c: Let netdb use a memp pool
+    for allocating memory when getaddrinfo() is called.
+
+  2010-01-31: Simon Goldschmidt
+  * dhcp.h, dhcp.c: Reworked the code that parses DHCP options: parse
+    them once instead of parsing for every option. This also removes
+    the need for mem_malloc from dhcp_recv and makes it possible to
+    correctly retrieve the BOOTP file.
+
+  2010-01-30: simon Goldschmidt
+  * sockets.c: Use SYS_LIGHTWEIGHT_PROT instead of a semaphore to protect
+    the sockets array.
+
+  2010-01-29: Simon Goldschmidt (patch by Laura Garrett)
+  * api.h, api_msg.c, sockets.c: Added except set support in select
+    (patch #6860)
+
+  2010-01-29: Simon Goldschmidt (patch by Laura Garrett)
+  * api.h, sockets.h, err.h, api_lib.c, api_msg.c, sockets.c, err.c:
+    Add non-blocking support for connect (partly from patch #6860),
+    plus many cleanups in socket & netconn API.
+
+  2010-01-27: Simon Goldschmidt
+  * opt.h, tcp.h, init.c, api_msg.c: Added TCP_SNDQUEUELOWAT corresponding
+    to TCP_SNDLOWAT and added tcp_sndqueuelen() - this fixes bug #28605
+
+  2010-01-26: Simon Goldschmidt
+  * snmp: Use memp pools for snmp instead of the heap; added 4 new pools.
+
+  2010-01-14: Simon Goldschmidt
+  * ppp.c/.h: Fixed bug #27856: PPP: Set netif link- and status-callback
+    by adding ppp_set_netif_statuscallback()/ppp_set_netif_linkcallback()
+
+  2010-01-13: Simon Goldschmidt
+  * mem.c: The heap now may be moved to user-defined memory by defining
+    LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address
+    (patch #6966 and bug #26133)
+
+  2010-01-10: Simon Goldschmidt (Bill Auerbach)
+  * opt.h, memp.c: patch #6822 (Add option to place memory pools in
+    separate arrays)
+
+  2010-01-10: Simon Goldschmidt
+  * init.c, igmp.c: patch #6463 (IGMP - Adding Random Delay): added define
+    LWIP_RAND() for lwip-wide randomization (to be defined in cc.h)
+
+  2009-12-31: Simon Goldschmidt
+  * tcpip.c, init.c, memp.c, sys.c, memp_std.h, sys.h, tcpip.h
+    added timers.c/.h: Separated timer implementation from semaphore/mbox
+    implementation, moved timer implementation to timers.c/.h, timers are
+    now only called from tcpip_thread or by explicitly checking them.
+    (TASK#7235)
+
+  2009-12-27: Simon Goldschmidt
+  * opt.h, etharp.h/.c, init.c, tcpip.c: Added an additional option
+    LWIP_ETHERNET to support ethernet without ARP (necessary for pure PPPoE)
+
+
+  ++ Bugfixes:
+
+  2011-04-20: Simon Goldschmidt
+  * sys_arch.txt: sys_arch_timeouts() is not needed any more.
+
+  2011-04-13: Simon Goldschmidt
+  * tcp.c, udp.c: Fixed bug #33048 (Bad range for IP source port numbers) by
+    using ports in the IANA private/dynamic range (49152 through 65535).
+
+  2011-03-29: Simon Goldschmidt, patch by Emil Lhungdahl:
+  * etharp.h/.c: Fixed broken VLAN support.
+
+  2011-03-27: Simon Goldschmidt
+  * tcp.c: Fixed bug #32926 (TCP_RMV(&tcp_bound_pcbs) is called on unbound tcp
+    pcbs) by checking if the pcb was bound (local_port != 0).
+
+  2011-03-27: Simon Goldschmidt
+  * ppp.c: Fixed bug #32280 (ppp: a pbuf is freed twice)
+
+  2011-03-27: Simon Goldschmidt
+  * sockets.c: Fixed bug #32906: lwip_connect+lwip_send did not work for udp and
+    raw pcbs with LWIP_TCPIP_CORE_LOCKING==1.
+  
+  2011-03-27: Simon Goldschmidt
+  * tcp_out.c: Fixed bug #32820 (Outgoing TCP connections created before route
+    is present never times out) by starting retransmission timer before checking
+    route.
+
+  2011-03-22: Simon Goldschmidt
+  * ppp.c: Fixed bug #32648 (PPP code crashes when terminating a link) by only
+    calling sio_read_abort() if the file descriptor is valid.
+
+  2011-03-14: Simon Goldschmidt
+  * err.h/.c, sockets.c, api_msg.c: fixed bug #31748 (Calling non-blocking connect
+    more than once can render a socket useless) since it mainly involves changing
+    "FATAL" classification of error codes: ERR_USE and ERR_ISCONN just aren't fatal.
+
+  2011-03-13: Simon Goldschmidt
+  * sockets.c: fixed bug #32769 (ESHUTDOWN is linux-specific) by fixing
+    err_to_errno_table (ERR_CLSD: ENOTCONN instead of ESHUTDOWN), ERR_ISCONN:
+    use EALRADY instead of -1
+
+  2011-03-13: Simon Goldschmidt
+  * api_lib.c: netconn_accept: return ERR_ABRT instead of ERR_CLSD if the
+    connection has been aborted by err_tcp (since this is not a normal closing
+    procedure).
+
+  2011-03-13: Simon Goldschmidt
+  * tcp.c: tcp_bind: return ERR_VAL instead of ERR_ISCONN when trying to bind
+    with pcb->state != CLOSED
+
+  2011-02-17: Simon Goldschmidt
+  * rawapi.txt: Fixed bug #32561 tcp_poll argument definition out-of-order in
+    documentation
+
+  2011-02-17: Simon Goldschmidt
+  * many files: Added missing U/UL modifiers to fix 16-bit-arch portability.
+
+  2011-01-24: Simon Goldschmidt
+  * sockets.c: Fixed bug #31741: lwip_select seems to have threading problems
+
+  2010-12-02: Simon Goldschmidt
+  * err.h: Fixed ERR_IS_FATAL so that ERR_WOULDBLOCK is not fatal.
+
+  2010-11-23: Simon Goldschmidt
+  * api.h, api_lib.c, api_msg.c, sockets.c: netconn.recv_avail is only used for
+    LWIP_SO_RCVBUF and ioctl/FIONREAD.
+
+  2010-11-23: Simon Goldschmidt
+  * etharp.c: Fixed bug #31720: ARP-queueing: RFC 1122 recommends to queue at
+    least 1 packet -> ARP_QUEUEING==0 now queues the most recent packet.
+
+  2010-11-23: Simon Goldschmidt
+  * tcp_in.c: Fixed bug #30577: tcp_input: don't discard ACK-only packets after
+    refusing 'refused_data' again.
+  
+  2010-11-22: Simon Goldschmidt
+  * sockets.c: Fixed bug #31590: getsockopt(... SO_ERROR ...) gives EINPROGRESS
+    after a successful nonblocking connection.
+
+  2010-11-22: Simon Goldschmidt
+  * etharp.c: Fixed bug #31722: IP packets sent with an AutoIP source addr
+    must be sent link-local
+
+  2010-11-22: Simon Goldschmidt
+  * timers.c: patch #7329: tcp_timer_needed prototype was ifdef'ed out for
+    LWIP_TIMERS==0
+
+  2010-11-20: Simon Goldschmidt
+  * sockets.c: Fixed bug #31170: lwip_setsockopt() does not set socket number
+
+  2010-11-20: Simon Goldschmidt
+  * sockets.h: Fixed bug #31304: Changed SHUT_RD, SHUT_WR and SHUT_RDWR to
+    resemble other stacks.
+
+  2010-11-20: Simon Goldschmidt
+  * dns.c: Fixed bug #31535: TCP_SND_QUEUELEN must be at least 2 or else
+    no-copy TCP writes will never succeed.
+
+  2010-11-20: Simon Goldschmidt
+  * dns.c: Fixed bug #31701: Error return value from dns_gethostbyname() does
+    not match documentation: return ERR_ARG instead of ERR_VAL if not
+    initialized or wrong argument.
+
+  2010-10-20: Simon Goldschmidt
+  * sockets.h: Fixed bug #31385: sizeof(struct sockaddr) is 30 but should be 16
+
+  2010-10-05: Simon Goldschmidt
+  * dhcp.c: Once again fixed #30038: DHCP/AutoIP cooperation failed when
+    replugging the network cable after an AutoIP address was assigned.
+
+  2010-08-10: Simon Goldschmidt
+  * tcp.c: Fixed bug #30728: tcp_new_port() did not check listen pcbs
+
+  2010-08-03: Simon Goldschmidt
+  * udp.c, raw.c: Don't chain empty pbufs when sending them (fixes bug #30625)
+
+  2010-08-01: Simon Goldschmidt (patch by Greg Renda)
+  * ppp.c: Applied patch #7264 (PPP protocols are rejected incorrectly on big
+    endian architectures)
+  
+  2010-07-28: Simon Goldschmidt
+  * api_lib.c, api_msg.c, sockets.c, mib2.c: Fixed compilation with TCP or UDP
+    disabled.
+  
+  2010-07-27: Simon Goldschmidt
+  * tcp.c: Fixed bug #30565 (tcp_connect() check bound list): that check did no
+    harm but never did anything
+  
+  2010-07-21: Simon Goldschmidt
+  * ip.c: Fixed invalid fix for bug #30402 (CHECKSUM_GEN_IP_INLINE does not
+    add IP options)
+
+  2010-07-16: Kieran Mansley
+  * msg_in.c: Fixed SNMP ASN constant defines to not use ! operator 
+
+  2010-07-10: Simon Goldschmidt
+  * ip.c: Fixed bug #30402: CHECKSUM_GEN_IP_INLINE does not add IP options
+
+  2010-06-30: Simon Goldschmidt
+  * api_msg.c: fixed bug #30300 (shutdown parameter was not initialized in
+    netconn_delete)
+
+  2010-06-28: Kieran Mansley
+  * timers.c remove unportable printing of C function pointers
+
+  2010-06-24: Simon Goldschmidt
+  * init.c, timers.c/.h, opt.h, memp_std.h: From patch #7221: added flag
+    NO_SYS_NO_TIMERS to drop timer support for NO_SYS==1 for easier upgrading
+
+  2010-06-24: Simon Goldschmidt
+  * api(_lib).c/.h, api_msg.c/.h, sockets.c/.h: Fixed bug #10088: Correctly
+    implemented shutdown at socket level.
+
+  2010-06-21: Simon Goldschmidt
+  * pbuf.c/.h, ip_frag.c/.h, opt.h, memp_std.h: Fixed bug #29361 (ip_frag has
+    problems with zero-copy DMA MACs) by adding custom pbufs and implementing
+    custom pbufs that reference other (original) pbufs. Additionally set
+    IP_FRAG_USES_STATIC_BUF=0 as default to be on the safe side.
+
+  2010-06-15: Simon Goldschmidt
+  * dhcp.c: Fixed bug #29970: DHCP endian issue parsing option responses
+
+  2010-06-14: Simon Goldschmidt
+  * autoip.c: Fixed bug #30039: AutoIP does not reuse previous addresses
+
+  2010-06-12: Simon Goldschmidt
+  * dhcp.c: Fixed bug #30038: dhcp_network_changed doesn't reset AUTOIP coop
+    state
+
+  2010-05-17: Simon Goldschmidt
+  * netdb.c: Correctly NULL-terminate h_addr_list
+
+  2010-05-16: Simon Goldschmidt
+  * def.h/.c: changed the semantics of LWIP_PREFIX_BYTEORDER_FUNCS to prevent
+    "symbol already defined" i.e. when linking to winsock
+
+  2010-05-05: Simon Goldschmidt
+  * def.h, timers.c: Fixed bug #29769 (sys_check_timeouts: sys_now() may
+    overflow)
+
+  2010-04-21: Simon Goldschmidt
+  * api_msg.c: Fixed bug #29617 (sometime cause stall on delete listening
+    connection)
+
+  2010-03-28: Luca Ceresoli
+  * ip_addr.c/.h: patch #7143: Add a few missing const qualifiers
+
+  2010-03-27: Luca Ceresoli
+  * mib2.c: patch #7130: remove meaningless const qualifiers
+
+  2010-03-26: Simon Goldschmidt
+  * tcp_out.c: Make LWIP_NETIF_TX_SINGLE_PBUF work for TCP, too
+
+  2010-03-26: Simon Goldschmidt
+  * various files: Fixed compiling with different options disabled (TCP/UDP),
+    triggered by bug #29345; don't allocate acceptmbox if LWIP_TCP is disabled
+
+  2010-03-25: Simon Goldschmidt
+  * sockets.c: Fixed bug #29332: lwip_select() processes readset incorrectly
+
+  2010-03-25: Simon Goldschmidt
+  * tcp_in.c, test_tcp_oos.c: Fixed bug #29080: Correctly handle remote side
+    overrunning our rcv_wnd in ooseq case.
+
+  2010-03-22: Simon Goldschmidt
+  * tcp.c: tcp_listen() did not copy the pcb's prio.
+
+  2010-03-19: Simon Goldschmidt
+  * snmp_msg.c: Fixed bug #29256: SNMP Trap address was not correctly set
+
+  2010-03-14: Simon Goldschmidt
+  * opt.h, etharp.h: Fixed bug #29148 (Incorrect PBUF_POOL_BUFSIZE for ports
+    where ETH_PAD_SIZE > 0) by moving definition of ETH_PAD_SIZE to opt.h
+    and basing PBUF_LINK_HLEN on it.
+
+  2010-03-08: Simon Goldschmidt
+  * netif.c, ipv4/ip.c: task #10241 (AutoIP: don't break existing connections
+    when assiging routable address): when checking incoming packets and
+    aborting existing connection on address change, filter out link-local
+    addresses.
+
+  2010-03-06: Simon Goldschmidt
+  * sockets.c: Fixed LWIP_NETIF_TX_SINGLE_PBUF for LWIP_TCPIP_CORE_LOCKING
+
+  2010-03-06: Simon Goldschmidt
+  * ipv4/ip.c: Don't try to forward link-local addresses
+
+  2010-03-06: Simon Goldschmidt
+  * etharp.c: Fixed bug #29087: etharp: don't send packets for LinkLocal-
+    addresses to gw
+
+  2010-03-05: Simon Goldschmidt
+  * dhcp.c: Fixed bug #29072: Correctly set ciaddr based on message-type
+    and state.
+
+  2010-03-05: Simon Goldschmidt
+  * api_msg.c: Correctly set TCP_WRITE_FLAG_MORE when netconn_write is split
+    into multiple calls to tcp_write.    
+
+  2010-02-21: Simon Goldschmidt
+  * opt.h, mem.h, dns.c: task #10140: Remove DNS_USES_STATIC_BUF (keep
+    the implementation of DNS_USES_STATIC_BUF==1)
+
+  2010-02-20: Simon Goldschmidt
+  * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Task #10088: Correctly implement
+    close() vs. shutdown(). Now the application does not get any more
+    recv callbacks after calling tcp_close(). Added tcp_shutdown().
+
+  2010-02-19: Simon Goldschmidt
+  * mem.c/.h, pbuf.c: Renamed mem_realloc() to mem_trim() to prevent
+    confusion with realloc()
+
+  2010-02-15: Simon Goldschmidt/Stephane Lesage
+  * netif.c/.h: Link status does not depend on LWIP_NETIF_LINK_CALLBACK
+    (fixes bug #28899)
+
+  2010-02-14: Simon Goldschmidt
+  * netif.c: Fixed bug #28877 (Duplicate ARP gratuitous packet with
+    LWIP_NETIF_LINK_CALLBACK set on) by only sending if both link- and
+    admin-status of a netif are up
+
+  2010-02-14: Simon Goldschmidt
+  * opt.h: Disable ETHARP_TRUST_IP_MAC by default since it slows down packet
+    reception and is not really necessary
+
+  2010-02-14: Simon Goldschmidt
+  * etharp.c/.h: Fixed ARP input processing: only add a new entry if a
+    request was directed as us (RFC 826, Packet Reception), otherwise
+    only update existing entries; internalized some functions
+
+  2010-02-14: Simon Goldschmidt
+  * netif.h, etharp.c, tcpip.c: Fixed bug #28183 (ARP and TCP/IP cannot be
+    disabled on netif used for PPPoE) by adding a new netif flag
+    (NETIF_FLAG_ETHERNET) that tells the stack the device is an ethernet
+    device but prevents usage of ARP (so that ethernet_input can be used
+    for PPPoE).
+
+  2010-02-12: Simon Goldschmidt
+  * netif.c: netif_set_link_up/down: only do something if the link state
+    actually changes
+
+  2010-02-12: Simon Goldschmidt/Stephane Lesage
+  * api_msg.c: Fixed bug #28865 (Cannot close socket/netconn in non-blocking
+    connect)
+
+  2010-02-12: Simon Goldschmidt
+  * mem.h: Fixed bug #28866 (mem_realloc function defined in mem.h)
+
+  2010-02-09: Simon Goldschmidt
+  * api_lib.c, api_msg.c, sockets.c, api.h, api_msg.h: Fixed bug #22110
+   (recv() makes receive window update for data that wasn't received by
+    application)
+
+  2010-02-09: Simon Goldschmidt/Stephane Lesage
+  * sockets.c: Fixed bug #28853 (lwip_recvfrom() returns 0 on receive time-out
+    or any netconn_recv() error)
+
+  2010-02-09: Simon Goldschmidt
+  * ppp.c: task #10154 (PPP: Update snmp in/out counters for tx/rx packets)
+
+  2010-02-09: Simon Goldschmidt
+  * netif.c: For loopback packets, adjust the stats- and snmp-counters
+    for the loopback netif.
+
+  2010-02-08: Simon Goldschmidt
+  * igmp.c/.h, ip.h: Moved most defines from igmp.h to igmp.c for clarity
+    since they are not used anywhere else.
+
+  2010-02-08: Simon Goldschmidt (St�phane Lesage)
+  * igmp.c, igmp.h, stats.c, stats.h: Improved IGMP stats
+    (patch from bug #28798)
+
+  2010-02-08: Simon Goldschmidt (St�phane Lesage)
+  * igmp.c: Fixed bug #28798 (Error in "Max Response Time" processing) and
+    another bug when LWIP_RAND() returns zero.
+
+  2010-02-04: Simon Goldschmidt
+  * nearly every file: Use macros defined in ip_addr.h (some of them new)
+    to work with IP addresses (preparation for bug #27352 - Change ip_addr
+    from struct to typedef (u32_t) - and better code).
+
+  2010-01-31: Simon Goldschmidt
+  * netif.c: Don't call the link-callback from netif_set_up/down() since
+    this invalidly retriggers DHCP.
+
+  2010-01-29: Simon Goldschmidt
+  * ip_addr.h, inet.h, def.h, inet.c, def.c, more: Cleanly separate the
+    portability file inet.h and its contents from the stack: moved htonX-
+    functions to def.h (and the new def.c - they are not ipv4 dependent),
+    let inet.h depend on ip_addr.h and not the other way round.
+    This fixes bug #28732.
+
+  2010-01-28: Kieran Mansley
+  * tcp.c: Ensure ssthresh >= 2*MSS
+
+  2010-01-27: Simon Goldschmidt
+  * tcp.h, tcp.c, tcp_in.c: Fixed bug #27871: Calling tcp_abort() in recv
+    callback can lead to accessing unallocated memory. As a consequence,
+    ERR_ABRT means the application has called tcp_abort()!
+
+  2010-01-25: Simon Goldschmidt
+  * snmp_structs.h, msg_in.c: Partly fixed bug #22070 (MIB_OBJECT_WRITE_ONLY
+    not implemented in SNMP): write-only or not-accessible are still
+    returned by getnext (though not by get)
+
+  2010-01-24: Simon Goldschmidt
+  * snmp: Renamed the private mib node from 'private' to 'mib_private' to
+    not use reserved C/C++ keywords
+
+  2010-01-23: Simon Goldschmidt
+  * sockets.c: Fixed bug #28716: select() returns 0 after waiting for less
+    than 1 ms
+
+  2010-01-21: Simon Goldschmidt
+  * tcp.c, api_msg.c: Fixed bug #28651 (tcp_connect: no callbacks called
+    if tcp_enqueue fails) both in raw- and netconn-API
+
+  2010-01-19: Simon Goldschmidt
+  * api_msg.c: Fixed bug #27316: netconn: Possible deadlock in err_tcp
+
+  2010-01-18: Iordan Neshev/Simon Goldschmidt
+  * src/netif/ppp: reorganised PPP sourcecode to 2.3.11 including some
+    bugfix backports from 2.4.x.
+
+  2010-01-18: Simon Goldschmidt
+  * mem.c: Fixed bug #28679: mem_realloc calculates mem_stats wrong
+
+  2010-01-17: Simon Goldschmidt
+  * api_lib.c, api_msg.c, (api_msg.h, api.h, sockets.c, tcpip.c):
+    task #10102: "netconn: clean up conn->err threading issues" by adding
+    error return value to struct api_msg_msg
+
+  2010-01-17: Simon Goldschmidt
+  * api.h, api_lib.c, sockets.c: Changed netconn_recv() and netconn_accept()
+    to return err_t (bugs #27709 and #28087)
+
+  2010-01-14: Simon Goldschmidt
+  * ...: Use typedef for function prototypes throughout the stack.
+
+  2010-01-13: Simon Goldschmidt
+  * api_msg.h/.c, api_lib.c: Fixed bug #26672 (close connection when receive
+    window = 0) by correctly draining recvmbox/acceptmbox
+
+  2010-01-11: Simon Goldschmidt
+  * pap.c: Fixed bug #13315 (PPP PAP authentication can result in
+    erroneous callbacks) by copying the code from recent pppd
+
+  2010-01-10: Simon Goldschmidt
+  * raw.c: Fixed bug #28506 (raw_bind should filter received packets)
+
+  2010-01-10: Simon Goldschmidt
+  * tcp.h/.c: bug #28127 (remove call to tcp_output() from tcp_ack(_now)())
+
+  2010-01-08: Simon Goldschmidt
+  * sockets.c: Fixed bug #28519 (lwip_recvfrom bug with len > 65535)
+
+  2010-01-08: Simon Goldschmidt
+  * dns.c: Copy hostname for DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1 since string
+    passed to dns_local_addhost() might be volatile
+
+  2010-01-07: Simon Goldschmidt
+  * timers.c, tcp.h: Call tcp_timer_needed() with NO_SYS==1, too
+
+  2010-01-06: Simon Goldschmidt
+  * netdb.h: Fixed bug #28496: missing include guards in netdb.h
+
+  2009-12-31: Simon Goldschmidt
+  * many ppp files: Reorganised PPP source code from ucip structure to pppd
+    structure to easily compare our code against the pppd code (around v2.3.1)
+
+  2009-12-27: Simon Goldschmidt
+  * tcp_in.c: Another fix for bug #28241 (ooseq processing) and adapted
+    unit test
+
+
+(STABLE-1.3.2)
+
+  ++ New features:
+
+  2009-10-27 Simon Goldschmidt/Stephan Lesage
+  * netifapi.c/.h: Added netifapi_netif_set_addr()
+
+  2009-10-07 Simon Goldschmidt/Fabian Koch
+  * api_msg.c, netbuf.c/.h, opt.h: patch #6888: Patch for UDP Netbufs to
+    support dest-addr and dest-port (optional: LWIP_NETBUF_RECVINFO)
+
+  2009-08-26 Simon Goldschmidt/Simon Kallweit
+  * slipif.c/.h: bug #26397: SLIP polling support
+
+  2009-08-25 Simon Goldschmidt
+  * opt.h, etharp.h/.c: task #9033: Support IEEE 802.1q tagged frame (VLAN),
+    New configuration options ETHARP_SUPPORT_VLAN and ETHARP_VLAN_CHECK.
+
+  2009-08-25 Simon Goldschmidt
+  * ip_addr.h, netdb.c: patch #6900: added define ip_ntoa(struct ip_addr*)
+
+  2009-08-24 Jakob Stoklund Olesen
+  * autoip.c, dhcp.c, netif.c: patch #6725: Teach AutoIP and DHCP to respond
+    to netif_set_link_up().
+
+  2009-08-23 Simon Goldschmidt
+  * tcp.h/.c: Added function tcp_debug_state_str() to convert a tcp state
+    to a human-readable string.
+
+  ++ Bugfixes:
+
+  2009-12-24: Kieran Mansley
+  * tcp_in.c Apply patches from Oleg Tyshev to improve OOS processing
+    (BUG#28241)
+
+  2009-12-06: Simon Goldschmidt
+  * ppp.h/.c: Fixed bug #27079 (Yet another leak in PPP): outpacket_buf can
+    be statically allocated (like in ucip)
+
+  2009-12-04: Simon Goldschmidt (patch by Ioardan Neshev)
+  * pap.c: patch #6969: PPP: missing PAP authentication UNTIMEOUT
+
+  2009-12-03: Simon Goldschmidt
+  * tcp.h, tcp_in.c, tcp_out.c: Fixed bug #28106: dup ack for fast retransmit
+    could have non-zero length
+
+  2009-12-02: Simon Goldschmidt
+  * tcp_in.c: Fixed bug #27904: TCP sends too many ACKs: delay resetting
+    tcp_input_pcb until after calling the pcb's callbacks
+
+  2009-11-29: Simon Goldschmidt
+  * tcp_in.c: Fixed bug #28054: Two segments with FIN flag on the out-of-
+    sequence queue, also fixed PBUF_POOL leak in the out-of-sequence code
+
+  2009-11-29: Simon Goldschmidt
+  * pbuf.c: Fixed bug #28064: pbuf_alloc(PBUF_POOL) is not thread-safe by
+    queueing a call into tcpip_thread to free ooseq-bufs if the pool is empty
+
+  2009-11-26: Simon Goldschmidt
+  * tcp.h: Fixed bug #28098: Nagle can prevent fast retransmit from sending
+    segment
+
+  2009-11-26: Simon Goldschmidt
+  * tcp.h, sockets.c: Fixed bug #28099: API required to disable Nagle
+    algorithm at PCB level
+
+  2009-11-22: Simon Goldschmidt
+  * tcp_out.c: Fixed bug #27905: FIN isn't combined with data on unsent
+
+  2009-11-22: Simon Goldschmidt (suggested by Bill Auerbach)
+  * tcp.c: tcp_alloc: prevent increasing stats.err for MEMP_TCP_PCB when
+    reusing time-wait pcb
+
+  2009-11-20: Simon Goldschmidt (patch by Albert Bartel)
+  * sockets.c: Fixed bug #28062: Data received directly after accepting
+    does not wake up select
+
+  2009-11-11: Simon Goldschmidt
+  * netdb.h: Fixed bug #27994: incorrect define for freeaddrinfo(addrinfo)
+
+  2009-10-30: Simon Goldschmidt
+  * opt.h: Increased default value for TCP_MSS to 536, updated default
+    value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.
+
+  2009-10-28: Kieran Mansley
+  * tcp_in.c, tcp_out.c, tcp.h: re-work the fast retransmission code
+    to follow algorithm from TCP/IP Illustrated
+
+  2009-10-27: Kieran Mansley
+  * tcp_in.c: fix BUG#27445: grow cwnd with every duplicate ACK
+
+  2009-10-25: Simon Goldschmidt
+  * tcp.h: bug-fix in the TCP_EVENT_RECV macro (has to call tcp_recved if
+    pcb->recv is NULL to keep rcv_wnd correct)
+
+  2009-10-25: Simon Goldschmidt
+  * tcp_in.c: Fixed bug #26251: RST process in TIME_WAIT TCP state
+
+  2009-10-23: Simon Goldschmidt (David Empson)
+  * tcp.c: Fixed bug #27783: Silly window avoidance for small window sizes
+
+  2009-10-21: Simon Goldschmidt
+  * tcp_in.c: Fixed bug #27215: TCP sent() callback gives leading and
+    trailing 1 byte len (SYN/FIN)
+
+  2009-10-21: Simon Goldschmidt
+  * tcp_out.c: Fixed bug #27315: zero window probe and FIN
+
+  2009-10-19: Simon Goldschmidt
+  * dhcp.c/.h: Minor code simplification (don't store received pbuf, change
+    conditional code to assert where applicable), check pbuf length before
+    testing for valid reply
+
+  2009-10-19: Simon Goldschmidt
+  * dhcp.c: Removed most calls to udp_connect since they aren't necessary
+    when using udp_sendto_if() - always stay connected to IP_ADDR_ANY.
+
+  2009-10-16: Simon Goldschmidt
+  * ip.c: Fixed bug #27390: Source IP check in ip_input() causes it to drop
+    valid DHCP packets -> allow 0.0.0.0 as source address when LWIP_DHCP is
+    enabled
+
+  2009-10-15: Simon Goldschmidt (Oleg Tyshev)
+  * tcp_in.c: Fixed bug #27329: dupacks by unidirectional data transmit
+
+  2009-10-15: Simon Goldschmidt
+  * api_lib.c: Fixed bug #27709: conn->err race condition on netconn_recv()
+    timeout
+
+  2009-10-15: Simon Goldschmidt
+  * autoip.c: Fixed bug #27704: autoip starts with wrong address
+    LWIP_AUTOIP_CREATE_SEED_ADDR() returned address in host byte order instead
+    of network byte order
+
+  2009-10-11 Simon Goldschmidt (J�rg Kesten)
+  * tcp_out.c: Fixed bug #27504: tcp_enqueue wrongly concatenates segments
+    which are not consecutive when retransmitting unacked segments
+
+  2009-10-09 Simon Goldschmidt
+  * opt.h: Fixed default values of some stats to only be enabled if used
+    Fixes bug #27338: sys_stats is defined when NO_SYS = 1
+
+  2009-08-30 Simon Goldschmidt
+  * ip.c: Fixed bug bug #27345: "ip_frag() does not use the LWIP_NETIF_LOOPBACK
+    function" by checking for loopback before calling ip_frag
+
+  2009-08-25 Simon Goldschmidt
+  * dhcp.c: fixed invalid dependency to etharp_query if DHCP_DOES_ARP_CHECK==0
+
+  2009-08-23 Simon Goldschmidt
+  * ppp.c: bug #27078: Possible memory leak in pppInit()
+
+  2009-08-23 Simon Goldschmidt
+  * netdb.c, dns.c: bug #26657: DNS, if host name is "localhost", result
+    is error.
+
+  2009-08-23 Simon Goldschmidt
+  * opt.h, init.c: bug #26649: TCP fails when TCP_MSS > TCP_SND_BUF
+    Fixed wrong parenthesis, added check in init.c
+
+  2009-08-23 Simon Goldschmidt
+  * ppp.c: bug #27266: wait-state debug message in pppMain occurs every ms
+
+  2009-08-23 Simon Goldschmidt
+  * many ppp files: bug #27267: Added include to string.h where needed
+
+  2009-08-23 Simon Goldschmidt
+  * tcp.h: patch #6843: tcp.h macro optimization patch (for little endian)
+
+
+(STABLE-1.3.1)
+
+  ++ New features:
+
+  2009-05-10 Simon Goldschmidt
+  * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option
+    LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only
+    one pbuf to help MACs that don't support scatter-gather DMA.
+
+  2009-05-09 Simon Goldschmidt
+  * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming
+    ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
+
+  2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen
+  * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive
+    extended info about the currently received packet.
+
+  2009-04-27 Simon Goldschmidt
+  * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1
+
+  2009-04-25 Simon Goldschmidt
+  * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next
+    bigger malloc pool if one is empty (only usable with MEM_USE_POOLS).
+
+  2009-04-21 Simon Goldschmidt
+  * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
+    hosts table. New configuration options DNS_LOCAL_HOSTLIST and
+    DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined
+    as an external function for lookup.
+
+  2009-04-15 Simon Goldschmidt
+  * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
+
+  2009-03-31 Kieran Mansley
+  * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
+    TCP timestamp options, off by default.  Rework tcp_enqueue() to
+    take option flags rather than specified option data
+
+  2009-02-18 Simon Goldschmidt
+  * cc.h: Added printf formatter for size_t: SZT_F
+
+  2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
+  * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
+    pings
+
+  2009-02-12 Simon Goldschmidt
+  * init.h: Added LWIP_VERSION to get the current version of the stack
+
+  2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
+  * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
+    of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
+    is otherwise used)
+
+  2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
+  * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
+  is only used by UDPLITE at present, so conditionalise it.
+
+  2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
+  * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
+    "seed" address. This should reduce AUTOIP conflicts if
+    LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
+
+  2008-10-02 Jonathan Larmour and Rishi Khan
+  * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
+    socket.
+
+  2008-06-30 Simon Goldschmidt
+  * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
+    interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
+    mem_free to run between mem_malloc iterations. Added illegal counter for
+    mem stats.
+
+  2008-06-27 Simon Goldschmidt
+  * stats.h/.c, some other files: patch #6483: stats module improvement:
+    Added defines to display each module's statistic individually, added stats
+    defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
+
+  2008-06-17 Simon Goldschmidt
+  * err.h: patch #6459: Made err_t overridable to use a more efficient type
+    (define LWIP_ERR_T in cc.h)
+
+  2008-06-17 Simon Goldschmidt
+  * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
+    to loopif
+
+  2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
+  * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
+    modified version of patch # 6370: Moved loopif code to netif.c so that
+    loopback traffic is supported on all netifs (all local IPs).
+    Added option to limit loopback packets for each netifs.
+
+
+  ++ Bugfixes:
+  2009-08-12 Kieran Mansley
+  * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when
+    out of window or out of order properly
+
+  2009-08-12 Kieran Mansley
+  * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1
+
+  2009-07-28 Simon Goldschmidt
+  * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s
+
+  2009-07-27 Kieran Mansley
+  * api.h api_msg.h netdb.h sockets.h: add missing #include directives
+
+  2009-07-09 Kieran Mansley
+  * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for
+    recv_avail and don't increment counters until message successfully
+    sent to mbox
+
+  2009-06-25 Kieran Mansley
+  * api_msg.c api.h: BUG26722: initialise netconn write variables 
+    in netconn_alloc
+
+  2009-06-25 Kieran Mansley
+  * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set
+
+  2009-06-25 Kieran Mansley
+  * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct
+    simultaneous close behaviour, and make snd_nxt have the same meaning 
+    as in the RFCs.
+
+  2009-05-12 Simon Goldschmidt
+  * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
+    arp_table / uses etharp_query" by adding etharp_gratuitous()
+
+  2009-05-12 Simon Goldschmidt
+  * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
+    to the IP header (used by igmp_ip_output_if)
+
+  2009-05-06 Simon Goldschmidt
+  * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if
+    defined) for SWAP_BYTES_IN_WORD to speed up checksumming.
+
+  2009-05-05 Simon Goldschmidt
+  * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select()
+    to crash
+
+  2009-05-04 Simon Goldschmidt
+  * init.c: snmp was not initialized in lwip_init()
+
+  2009-05-04 Fr�d�ric Bernon
+  * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled.
+
+  2009-05-03 Simon Goldschmidt
+  * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full
+    (and unsent->next == NULL)
+
+  2009-05-02 Simon Goldschmidt
+  * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after
+    1.3.0 in CVS only) - fixes compilation of ppp_oe.c
+
+  2009-05-02 Simon Goldschmidt
+  * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields
+
+  2009-05-01 Simon Goldschmidt
+  * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets
+
+  2009-05-01 Simon Goldschmidt
+  * ppp.c: bug #24228: Memory corruption with PPP and DHCP
+
+  2009-04-29 Fr�d�ric Bernon
+  * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the
+    SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception
+    of broadcast packets even when this option wasn't set. Port maintainers
+    which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h.
+    If you want this option also filter broadcast on recv operations, you also
+    have to set IP_SOF_BROADCAST_RECV=1 in opt.h.
+
+  2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen
+  * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and
+    DHCP/AUTOIP cooperation
+
+  2009-04-25 Simon Goldschmidt, Oleg Tyshev
+  * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd
+    Fixed by sorting the unsent and unacked queues (segments are inserted at the
+    right place in tcp_output and tcp_rexmit).
+
+  2009-04-25 Simon Goldschmidt
+  * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation
+    when debugging": memp_sizes contained the wrong sizes (including sanity
+    regions); memp pools for MEM_USE_POOLS were too small
+
+  2009-04-24 Simon Goldschmidt, Fr�d�ric Bernon
+  * inet.c: patch #6765: Fix a small problem with the last changes (incorrect
+    behavior, with with ip address string not ended by a '\0', a space or a
+    end of line)
+
+  2009-04-19 Simon Goldschmidt
+  * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails,
+    pcb->err is called, not pcb->connected (with an error code).
+
+  2009-04-19 Simon Goldschmidt
+  * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
+    no-copy-tcpwrite": deallocate option data, only concat segments with same flags
+
+  2009-04-19 Simon Goldschmidt
+  * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
+    in the header pbuf, not the data pbuf)
+
+  2009-04-18 Simon Goldschmidt
+  * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
+
+  2009-04-15 Simon Goldschmidt
+  * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
+
+  2009-04-15 Simon Goldschmidt
+  * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
+
+  2009-04-15 Simon Goldschmidt
+  * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
+    ip_hinted_output() (for smaller code mainly)
+
+  2009-04-15 Simon Goldschmidt
+  * inet.c: patch #6765: Supporting new line characters in inet_aton()
+
+  2009-04-15 Simon Goldschmidt
+  * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
+    Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
+    is big enough in dhcp_start
+
+  2009-04-15 Simon Goldschmidt
+  * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
+
+  2009-04-15 Simon Goldschmidt
+  * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
+
+  2009-04-15 Simon Goldschmidt
+  * sockets.c: bug #26121: set_errno can be overridden
+
+  2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
+  * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
+    LWIP_TCP==0
+
+  2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
+  * tcp.h: Patch#6802 Add do-while-clauses to those function like
+    macros in tcp.h
+
+  2009-03-31 Kieran Mansley
+  * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
+    updates are calculated and sent (BUG20515)
+
+  * tcp_in.c: cope with SYN packets received during established states,
+    and retransmission of initial SYN.
+
+  * tcp_out.c: set push bit correctly when tcp segments are merged
+
+  2009-03-27 Kieran Mansley
+  * tcp_out.c set window correctly on probes (correcting change made
+    yesterday)
+
+  2009-03-26 Kieran Mansley
+  * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
+    connections where no reset required (bug #25622)
+
+  * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes 
+    (bug #20779)
+
+  2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
+  * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
+    too small depending on MEM_ALIGNMENT
+
+  2009-02-16 Simon Goldschmidt
+  * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
+    converted size argument of netconn_write to 'size_t'
+
+  2009-02-16 Simon Goldschmidt
+  * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
+    by moving accept callback function pointer to TCP_PCB_COMMON
+
+  2009-02-12 Simon Goldschmidt
+  * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
+    option)
+
+  2009-02-11 Simon Goldschmidt
+  * dhcp.c: fixed bug #24480 (rel

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