Thread (3 messages) flat view 3 messages, 3 authors, 7d ago

Re: [PATCH net-next v5] net: dropreason: add SKB_DROP_REASON_IP_TTL_EXCEEDED

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-09-12 00:01:11
Also in: lkml

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:

On Thu, 10 Sep 2026 17:49:37 +0800 you wrote:
The forwarding paths report an expired TTL or hop limit as
SKB_DROP_REASON_IP_INHDR, the reason otherwise used for a header that is
malformed (ip_input.c, exthdrs.c, br_netfilter). Nothing else in the drop
path separates the two: IPSTATS_MIB_INHDRERRORS covers both, and the TTL
check runs before NF_INET_FORWARD, so netfilter tracing stops at
PREROUTING and never sees the drop.

[...]
Here is the summary with links:
  - [net-next,v5] net: dropreason: add SKB_DROP_REASON_IP_TTL_EXCEEDED
    https://git.kernel.org/netdev/net-next/c/219c6b768ec7

You are awesome, thank you!
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