Re: [REGRESSION] vxlan: duplicate ICMP replies with nexthop FDB entries after 3fa64d86fc64

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:

quoted

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!