Re: [PATCH net v3] net: ipv6: keep room for the mac header in dst_dev_overhead()

[patchwork-bot+netdevbpf]

Hello:

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

On Tue, 22 Sep 2026 05:49:56 +0900 you wrote:
> The seg6, ioam6 and rpl lwtunnels size their skb_cow_head() request as
> the length they are about to push plus dst_dev_overhead(), then push the
> new headers and rebuild the mac header below them with
> skb_mac_header_rebuild().  That rebuild needs skb->mac_len of headroom,
> but dst_dev_overhead() leaves LL_RESERVED_SPACE() of the egress device,
> 16 bytes for plain Ethernet.
> 
> [...]

Here is the summary with links:
  - [net,v3] net: ipv6: keep room for the mac header in dst_dev_overhead()
    https://git.kernel.org/netdev/net/c/87cd6b717e40

You are awesome, thank you!
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