From: Ido Schimmel <idosch@nvidia.com>
To: Sascha Frey <sf@techfak.net>
Cc: netdev@vger.kernel.org, qotmddnjs@ajou.ac.kr,
davem@davemloft.net, kuba@kernel.org, edumazet@google.com
Subject: Re: [REGRESSION] vxlan: duplicate ICMP replies with nexthop FDB entries after 3fa64d86fc64
Date: Wed, 28 Oct 2026 19:57:10 +0200 [thread overview]
Message-ID: <20261028175710.GA1116088@shredder> (raw)
In-Reply-To: <20261028150824.GA992905@shredder>
On Wed, Oct 28, 2026 at 05:08:24PM +0200, Ido Schimmel wrote:
> On Wed, Oct 28, 2026 at 03:29:28PM +0100, Sascha Frey wrote:
> > Could someone help investigate whether the new checks can interfere with
> > EVPN/FRR-installed nexthop FDB entries, or whether this exposes another
> > issue in the VXLAN FDB handling?
>
> I believe we need to relax the checks to allow "extern_learn" entries.
> They are not subject to ageing (vxlan_cleanup() skips them), so they
> cannot trigger the bug that commit 98fc57d16744 ("vxlan: reject dynamic
> fdb entries that reference a nexthop id") fixed. Let me do some testing.
Please test the following fix:
https://github.com/idosch/linux/commit/8d98fad34ed4ec2b5e0253a68ead7e436ceae6d6.patch
It's on top of current net.git. It won't apply cleanly to 7.2.y, but the
conflict resolution is trivial.
next prev parent reply other threads:[~2026-10-28 17:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-28 14:29 [REGRESSION] vxlan: duplicate ICMP replies with nexthop FDB entries after 3fa64d86fc64 Sascha Frey
2026-10-28 15:08 ` Ido Schimmel
2026-10-28 17:57 ` Ido Schimmel [this message]
2026-10-29 13:19 ` Sascha Frey
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