In case of HA routers IPv6 forwarding is not disabled by default and
then enabled only on master node.
Before this patch it was done in opposite way, so forwarding was
enabled by default and then disabled on backup nodes.
When forwarding was enabled/disabled for qg- port, MLDv2 packets are
sent and that might lead to temportary packets loss as packets to
FIP were sent to this backup node instead of master one.
Related-Bug: #1771841
Change-Id: Ia6b772e91c1f94612ca29d7082eca999372e60d6
(cherry picked from commit 3e9e2a5b4b2654864bb0e2a7d9b841eb03240147)
Reviewed: https:/ /review. openstack. org/571984 /git.openstack. org/cgit/ openstack/ neutron/ commit/ ?id=2ed6e4d7ab2 53f23fd81d84b12 7139b9deb438fd
Committed: https:/
Submitter: Zuul
Branch: stable/queens
commit 2ed6e4d7ab253f2 3fd81d84b127139 b9deb438fd
Author: Slawek Kaplonski <email address hidden>
Date: Thu May 17 12:16:52 2018 +0200
Disable IPv6 forwarding by default on HA routers
In case of HA routers IPv6 forwarding is not disabled by default and
then enabled only on master node.
Before this patch it was done in opposite way, so forwarding was
enabled by default and then disabled on backup nodes.
When forwarding was enabled/disabled for qg- port, MLDv2 packets are
sent and that might lead to temportary packets loss as packets to
FIP were sent to this backup node instead of master one.
Related-Bug: #1771841
Change-Id: Ia6b772e91c1f94 612ca29d7082eca 999372e60d6 64bb0e2a7d9b841 eb03240147)
(cherry picked from commit 3e9e2a5b4b26548