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Date:      Fri, 12 Dec 2025 15:32:24 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 290768] if_wg(4): handshake response has src and dst reverse
Message-ID:  <bug-290768-7501-NwTVQXSMxS@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-290768-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-290768-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290768

--- Comment #35 from Kyle Evans <kevans@freebsd.org> ---
(In reply to relvy from comment #34)

The implication, then, is probably that the packet is arriving and somehow not
associated with the correct inpcb that we registered for tunneling on, thus
`intoudpcb` gives you the wrong udpcb that doesn't have a u_tun_func.  I
somewhat suspect this may have more to do with pfil address rewriting, somehow,
than it does carp.  Can you try to eliminate carp from the setup completely,
but maintain the inbound pf forwarding and see if it reproduces still?

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