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Posted to commits@cloudstack.apache.org by GitBox <gi...@apache.org> on 2018/12/03 14:37:20 UTC
[GitHub] wido opened a new pull request #3077: ipv6: Calculate IPv6 address
instead of fetching one from a pool
wido opened a new pull request #3077: ipv6: Calculate IPv6 address instead of fetching one from a pool
URL: https://github.com/apache/cloudstack/pull/3077
## Description
With IPv6 we are not using DHCP to allocate addresses, but using
StateLess Address Auto Configuration (SLAAC) a Instance will calculate
it's own address based on the Router Advertisements send out by the
routers in the network.
This Advertisement contains the IPv6 Subnet in use in that subnet and
allows to calculate the stable Address the Instance will obtain based
on it's MAC Address.
The existing code is 'dead code' as it has been written, but was never
used by any production code.
SLAAC only works properly with subnets of exactly 64-bits large.
## Types of changes
- [ ] Enhancement (improves an existing feature and functionality)
## Screenshots (if appropriate):
## How Has This Been Tested?
On a CloudStack test setup running from master (4.12) and trying manually.
The zone is running with Advanced Networking and Guest Networks have been provided a IPv6 64-bits subnet:
- Advanced Networking
- Shared VXLAN network
- Ubuntu 18.04 hypervisors
UnitTesting has also been added to check that the code calculates the IPv6 Address as it should.
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