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Date:      Fri, 19 Dec 2008 20:04:27 +0300
From:      Vladimir Grebenschikov <vova@fbsd.ru>
To:        Qing Li <qingli@freebsd.org>
Cc:        freebsd-net@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: HEADSUP: arp-v2 has been committed
Message-ID:  <1229706267.85909.6.camel@localhost>
In-Reply-To: <873agpk11i.fsf@kobe.laptop>
References:  <200812150634.mBF6YDVC060565@freefall.freebsd.org> <873agpk11i.fsf@kobe.laptop>

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On Mon, 2008-12-15 at 15:42 +0200, Giorgos Keramidas wrote:
> On Mon, 15 Dec 2008 06:34:13 GMT, Qing Li <qingli@freebsd.org> wrote:
> > Hi All,
> >
> > The arp-v2 changes have been committed into HEAD.
> > Please report problems to me and Kip Macy.

Nice, my host sends arp-reply about other hosts

my host has MAC address 00:19:7d:8c:0b:44:

19:59:39.409151 00:13:e8:d5:0f:63 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 60: arp who-has 10.24.11.35 tell 10.24.11.42
>> it got broadcast arp request from some host


19:59:39.409163 00:19:7d:8c:0b:44 > 00:13:e8:d5:0f:63, ethertype ARP (0x0806), length 42: arp reply 10.24.11.35 is-at 00:13:e8:d5:0f:63
>> it replies - IP you seeking for is on your MAC address

some OS do put entries based on such bogus arp reply on their arp tables

Looks as serious problem of ARP stack. 

-- 
Vladimir B. Grebenschikov
vova@fbsd.ru



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