[Bug 296652] ARP replies from bridge are lost (?runt packet)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D296652

S.Haupt <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #3 from S.Haupt <[email protected]> ---
I can confirm that this bug is already present in FreeBSD 14.4.

My Setup:

Switch-01
Wire
Host-A.bnxt0 - Host-A.vlan01 - Host-A.bridge1 - Host-A.vxlan2 - Host-A.bnxt3
Wire
Host-B.ix0 - Host-B.vxlan2 - Host-B.bridge1 - Host-B.vlan01 - Host-B.bge1
Wire
Switch-02

When I ping from Switch-01 to Switch-02, I can see ARP "Request who-has" and
"ARP Replay" on Host-B.ix0. However, the ARP replay packages never arrive at
Host-A.bnxt3. The length field of the ARP replay was 42.

I changed the setup and replaced Host-B.ix0 with Host-B.bge0 and everything
worked as expected.

Therefore, I suggest to rise the importance of this bug from "affects only =
me"
to "Affects many people".

I found other bug reports in bugzilla that sound very similiar and may have=
 the
same root cause. So, maybe the bugs 268365, 191700, and 276936 describe the
same problem.

Has the attached patch already been merged into FreeBSD 14 and FreeBSD 15?

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