Re: [PATCH net v2] ip_gre: Reject enabling collect metadata through changelink

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Mon, 21 Sep 2026 11:18:59 +0800 you wrote:
> From: Xuanqiang Luo <luoxuanqiang@xxxxxxxxxx>
> 
> ipgre_netlink_parms() can enable collect_md on an existing GRE, GRETAP
> or ERSPAN device. Unlike newlink, changelink does not enforce metadata
> tunnel uniqueness. Converting a non-metadata device can therefore
> replace the metadata receive entry for another device of the same type
> in the same netns. Deleting either device then clears the shared entry,
> breaking metadata receive lookup for the surviving device.
> 
> [...]

Here is the summary with links:
  - [net,v2] ip_gre: Reject enabling collect metadata through changelink
    https://git.kernel.org/netdev/net/c/a3f315be9d30

You are awesome, thank you!
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