[jira] [Created] (CLOUDSTACK-1205) Ipv6 - Ubuntu 12.10 guest Vms looses default route (after it expiration time ~ 30 mts) when ipv6.autoconfig parameters are disabled except for net.ipv6.conf.lo.autoconf which is enabled.

["Sangeetha Hariharan (JIRA)" <ji...@apache.org>]

Sangeetha Hariharan created CLOUDSTACK-1205:
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             Summary: Ipv6 - Ubuntu 12.10 guest Vms looses default route (after it expiration time ~ 30 mts) when ipv6.autoconfig parameters are disabled except for  net.ipv6.conf.lo.autoconf which is enabled.
                 Key: CLOUDSTACK-1205
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1205
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Management Server
    Affects Versions: 4.1.0
         Environment: Latest build form network refactor branch.
            Reporter: Sangeetha Hariharan
             Fix For: 4.1.0


Ipv6 - Ubuntu 12.10 guest Vms looses default route (after it expiration time ~ 30 mts) when ipv6.autoconfig parameters are disabled except for  net.ipv6.conf.lo.autoconf which is enabled.


Steps to reproduce the problem:

Create a ipv6 network.
Deploy Ubuntu 12.10 guest Vms in Ipv6 network which have all pv6.autoconfig parameters disabled except for  net.ipv6.conf.lo.autoconf which is enabled.

As part of starting the Vm , we see that the ip route is set in the guest VM.

Wait for ~30 mt ( expiration time to pass).

Notice that the VM has lost its ipv6 route.


sangeetha@ubuntu-123:~$ sysctl -a | grep auto
sysctl: dev.cdrom.autoclose = 1
dev.cdrom.autoeject = 0
kernel.auto_msgmni = 1
permission denied on key 'kernel.cad_pid'
kernel.sched_autogroup_enabled = 1
sysctl: permission denied on key 'kernel.usermodehelper.bset'
sysctl: permission denied on key 'kernel.usermodehelper.inheritable'
net.ipv6.conf.all.autoconf = 0
net.ipv6.conf.default.autoconf = 0
net.ipv6.conf.eth0.autoconf = 0
net.ipv6.conf.lo.autoconf = 1
sangeetha@ubuntu-123:~$ ip -6 route
fc00:3:1370::/64 dev eth0  proto kernel  metric 256
fe80::/64 dev eth0  proto kernel  metric 256
sangeetha@ubuntu-123:~$


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