[Bug 296106] [carp] [vlan] [bridge] CARP IP not responding on top of bridge

[email protected] Tue, 07 Jul 2026 16:22:16 +0000
Newsgroups gmane.os.freebsd.devel.net
Message-ID <[email protected]/bugzilla/>
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296106

--- Comment #9 from [email protected] ---
After a bit of debugging here, I can confirm this problem.
The problem is that CARPs Virtual mac never gets associated with the bridge.
This is because bridge1.xx isn't technically a member of the bridge and MACs
sitting on it aren't learned.  The primary bridge1.xxx interface works because
that ip is simply associated with the main bridge's MAC.

I'm not sure what the intended behavior is but a workaround is creating an
epair, having the A inserted into the bridge while having the carp address sit
on the b side interface.  This would work because now you haven't something
that is a member of the bridge in which the MAC should be learned.

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