[Bug 270478] Duplicated ARP reply sent from if_bridge member

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 270478] Duplicated ARP reply sent from if_bridge member"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 27 Mar 2023 14:36:56 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270478

--- Comment #5 from Zhenlei Huang <zlei@FreeBSD.org> ---
Some digs:
https://github.com/freebsd/freebsd-src/blob/19e43c163c64636d2590dca006e22f18d22f48b2/sys/netinet/if_ether.c#L828-L870

For broadcast packets, they are processed by both bridge and its member (the
interface receiving the broadcast packets).
Specifically, both bridge and its member response to ARP requests and generate
ARP replies.

Should we suppress either bridge or its member so that the bridge behaves like
exactly ONE logical interface?

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