From owner-freebsd-net@FreeBSD.ORG  Mon Nov 21 11:42:16 2005
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Date: Mon, 21 Nov 2005 20:41:31 +0900
From: Kazuaki Oda <kaakun@highway.ne.jp>
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To: Gleb Smirnoff <glebius@FreeBSD.org>
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Cc: freebsd-net@FreeBSD.org
Subject: Re: gratuitous ARP from CARP backup host
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Gleb Smirnoff wrote:
> On Sun, Nov 20, 2005 at 01:04:40AM +0900, Kazuaki Oda wrote:
> K> I reported a problem a few days ago that CARP backup host replies ARP
> K> request.  This problem has been fixed, thanks.  But I found one more
> K> problem.
> K> 
> K> 1) master host and backup host are connected to the same layer 3
> K>    switch.
> K> 
> K> 2) at master host, I run the following command:
> K>    # ifconfig carp2 create
> K>    # ifconfig carp2 vhid 22 advskew 10 pass xxxx 192.168.1.7/24
> K> 
> K> 3) master host sends gratuitous ARP.
> K> 
> K> 4) at backup host, I run the following command:
> K>    # ifconfig carp2 create
> K>    # ifconfig carp2 vhid 22 advskew 100 pass xxxx 192.168.1.7/24
> K> 
> K> 5) backup host sends gratuitous ARP.
> K>    And so, layer 3 switch sends packets addressed for 192.168.1.7 to
> K>    the port connected to backup host, sigh...
> 
> Does it sends packets until next advertisement from master or forever?
> 

Forever.
Master host never receives the packets.


--------------------
Kazuaki Oda