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Date: Thu, 29 Oct 2026 14:19:06 +0100
From: Sascha Frey <sf@techfak.net>
To: Ido Schimmel <idosch@nvidia.com>
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
Message-ID: <20261029131906.GB8406@techfak.de>
References: <20261028142928.GA8406@techfak.de>
 <20261028150824.GA992905@shredder>
 <20261028175710.GA1116088@shredder>
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In-Reply-To: <20261028175710.GA1116088@shredder>

On Wed, Oct 28, 2026 at 07:57:10PM +0200, Ido Schimmel wrote:
> On Wed, Oct 28, 2026 at 05:08:24PM +0200, Ido Schimmel wrote:
> > 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

The fix works for me.

Thanks!