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From: Florian Westphal <fw@strlen.de>
To: Eugene Crosser <crosser@average.org>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: In raw prerouting, `iif` matches different interfaces in different kernels when enslaved in a vrf
Date: Sat, 2 Oct 2021 20:50:36 +0200	[thread overview]
Message-ID: <20211002185036.GJ2935@breakpoint.cc> (raw)
In-Reply-To: <17326577-1ab7-aaaa-0911-13ee131bdee0@average.org>

Eugene Crosser <crosser@average.org> wrote:
> Is this a known situation? Which behavior is "correct"?

No idea, your reproducer gives this on my laptop:

 unshare -n bash repro.sh
net.ipv4.conf.veout.accept_local = 1
5.14.9-200.fc34.x86_64
conntrack v1.4.5 (conntrack-tools): connection tracking table has been emptied.
PING 172.30.30.2 (172.30.30.2) from 172.30.30.1 vein: 56(84) bytes of data.

--- 172.30.30.2 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

conntrack v1.4.5 (conntrack-tools): 0 flow entries have been shown.

A bisection is needed to figure out what introduced a change.

However, if this is already changeed for a few releases then we can't
revert it again.

  reply	other threads:[~2021-10-02 18:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-01 15:19 In raw prerouting, `iif` matches different interfaces in different kernels when enslaved in a vrf Eugene Crosser
2021-10-02 18:50 ` Florian Westphal [this message]
2021-10-06 12:11   ` Eugene Crosser
2021-10-06 14:48     ` Eugene Crosser
2021-10-06 15:03       ` Florian Westphal
2021-10-06 15:09         ` Eugene Crosser
2021-10-07  9:31           ` Florian Westphal
2021-10-07  9:29     ` Florian Westphal

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