From: David Miller <davem@davemloft.net>
To: echaudro@redhat.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net-next] arp: Ignore packets with an all zero sender mac address
Date: Fri, 03 Nov 2017 21:19:49 +0900 (KST) [thread overview]
Message-ID: <20171103.211949.776819501386263401.davem@davemloft.net> (raw)
In-Reply-To: <cf78d039-acf2-76d1-becf-2672e63f2da3@redhat.com>
From: Eelco Chaudron <echaudro@redhat.com>
Date: Fri, 3 Nov 2017 11:39:04 +0100
> Looking for any mentioning of an all-zero MAC address being invalid,
> the only reference I could find was in the original first Xerox Wire
> Specification. The IEEE specifications do not mention this at all, and
> according to it, the all-zero address is a valid MA-L address assigned
> to Xerox.
>
> Looking at the packet more, it might be an attempt to do an unARP (RFC
> 1868) but forgot to implement to set the Hardware Address Length to
> zero.
>
> I'm sure adding an arptables entry can be used to solve this instead,
> in case the offending device cannot be fixed.
>
> Please ignore this patch...
Ok, thanks for looking more deeply into this.
prev parent reply other threads:[~2017-11-03 12:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-26 8:37 [PATCH net-next] arp: Ignore packets with an all zero sender mac address Eelco Chaudron
2017-10-27 13:48 ` David Miller
2017-11-03 10:39 ` Eelco Chaudron
2017-11-03 12:19 ` David Miller [this message]
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