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

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Message-ID: <CA+3n-Tq41i0zdMPkVwyQ2eX81iUvtf8TUBy7gTDeVVNJ_=kSGA@mail.gmail.com>
Date: Fri, 6 Feb 2026 15:23:27 +0100
From: Marc Sune <marcdevel@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: willemdebruijn.kernel@...il.com, pabeni@...hat.com, netdev@...r.kernel.org, 
	dborkman@...nel.org, vadim.fedorenko@...ux.dev
Subject: Re: [PATCH net-next v3 0/4] discard ARP/NDP b/mcast/null announce (poison)

Missatge de Jakub Kicinski <kuba@...nel.org> del dia dv., 6 de febr.
2026 a les 3:31:
>
> 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

Sorry, stupid mistake from my side.

I saw the failure in patchwork, and I was waiting 48h hours to
resubmit v4 without changes, (now) properly rebased.

> 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