Subject: Re: [PATCH net-next v3 0/4] discard ARP/NDP b/mcast/null announce (poison)

From: Jakub Kicinski <[email-masked]>
Date: Thu, 5 Feb 2026 18:31:27 -0800

On Wed,  4 Feb 2026 23:11:57 +0100 Marc Suñé wrote:
> The current ARP and NDP implementations accept announcements with
> multicast (broadcast incl.) and null MAC addresses as Sender HW Address
> (SHA) in ARP or src/target lladdr in NDP, and updates the cache
> for that neighbour.

Doesn't apply for me:

$ git checkout net-next/main 
$ git pw series apply 1050919

Failed to apply patch:
Applying: arp: discard invalid sha addr (b/mcast ARP poison)
Applying: selftests/net: add no ARP b/mcast,null poison test
Applying: neigh: discard invalid lladdr (b/mcast poison)
Applying: selftests/net: add no NDP b/mcast,null poison test
error: sha1 information is lacking or useless (tools/testing/selftests/net/Makefile).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config set advice.mergeConflict false"
Patch failed at 0004 selftests/net: add no NDP b/mcast,null poison test
-- 
pw-bot: cr