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Date:      Sat, 06 Sep 2025 09:31:52 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 289295] Host IP address ARP mapping jumps to address-less epair interface added to a bridge unexpectedly
Message-ID:  <bug-289295-7501-FQCJa1R3Ux@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-289295-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-289295-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D289295

Lexi Winter <ivy@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ivy@FreeBSD.org

--- Comment #3 from Lexi Winter <ivy@FreeBSD.org> ---
> Probably, it is up to bridge driver to handle such internaly?

no, you should change the configuration.  create the bridge interface on
startup, add the external member interface(s), and assign the IP address to=
 the
bridge:

cloned_interfaces=3D"bridge0"
ifconfig_igb0=3D"up"
ifconfig_bridge0=3D"addm igb0 inet 1.2.3.4/24 up"

then when you create a jail, add the interface to the bridge:

ifconfig bridge0 addm epair0a

assigning IP addresses to a bridge member interface doesn't work properly a=
nd
is the wrong way to do it.

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