[Bug 252437] ng_bridge does not filter unicast packets

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252437

            Bug ID: 252437
           Summary: ng_bridge does not filter unicast packets
           Product: Base System
           Version: 12.2-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: lutz at donnerhacke.de

After upgrading from 12.1-STABLE (April 2020) to 12.2-STABLE (Jan 2021) the
ng_bridge module does longer filter unicast traffic by MAC causing an overflow
of downlink interfaces.

Fallback to old kernel solves the problem.
I open the bug to track the effort in investigating.
More details will come later.

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