I've updated the top comment with the form required for a stable release update to 24.04, and integrated your test plan (doesn't have to be automatic :). Can you check if the top comment looks alright to you? You can just update and improve it otherwise.
Then, after the update is in the "proposed" repository, we would like you to perform the test steps you just suggested, so we can release the update for all users. Thanks again for your help and report! ** Description changed: + [ Impact ] + + * fixes frr to retain learned mac addressed over redundant routes for + EVPN over VXLAN links + + [ Test Plan ] + + - have physical hardware with pure vxlan evpn setup + - unplug cable from NIC1, then replug it. + - wait 30s + - unplug cable from NIC2, then replug it. + - without fix: observe that all traffic stops until frr is restarted + - with fix: traffic should still flow :) + + [ Where problems could occur ] + + * the adjustments are in the EVPN codepath only + * a new field for the EVPN router was added, changing sizeof(struct nexthop). + * registration of the inner MAC address is adjusted to carry over the hop in that new field, which could introduce regressions for existing EVPN setups. + + + [ Other Info ] + + - upstream commit + https://github.com/FRRouting/frr/pull/12524/commits/cea3f7f25a23e485d4f814b670c11c92249568e1 + in frr 9.1 + + [ Original Report ] + FRR 8.4 introduced a significant regression with VXLAN EVPN whereas if a link flapped any learned MAC addresses would be purged even if there was a redundant route. This means Ubuntu 24.04 LTS cannot be used as a VXLAN EVPN VTEP. The fix is already upstream and was corrected by https://github.com/FRRouting/frr/pull/12524 I have confirmed this PR fixes the issue and does indeed apply cleanly to the 8.4.4 version currently distributed by Ubuntu 24.04 LTS. Simply rebuilding the .deb package with this patch included works flawlessly. ** Summary changed: - FFR VXLAN EVPN bug fix backport + FFR forgets learned MACs on redundant EVPN over VXLAN links -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2113448 Title: FFR forgets learned MACs on redundant EVPN over VXLAN links To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/frr/+bug/2113448/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
