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Date:      Thu, 22 Apr 1999 09:55:54 -0500 (CDT)
From:      James Wyatt <jwyatt@RWSystems.net>
To:        Nicole Harrington <nicole@nmhtech.com>
Cc:        freebsd-isp@freebsd.org, freebsd-questions@freebsd.org
Subject:   Re: Odd ARP problem - can't intuit?
Message-ID:  <Pine.BSF.4.05.9904220946100.26234-100000@kasie.rwsystems.net>
In-Reply-To: <XFMail.990422072259.nicole@nmhtech.com>

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On Thu, 22 Apr 1999, Nicole Harrington wrote:
>  I have a really weird problem were two computers are on the same network
>  but cannot seem to get one of them to arp the other.
>  When I try to do it manually, I get the weird response below.
> 
> root@:/> arp -s computer.domain.com 00:e0:c9:s5:d9:b9 temp 
> cannot intuit interface index and type for computer.domain.com
> 
> 
>  Also, what causes this?
> vir1.domain.com (xxx.xxx.xxx.3) at (incomplete)

I've had odd problems similar to these when my netmasks made one of the
machines think the other wasn't on it's network. The one with the broken
subnet mask didn't think it shared an interface with the second. It also
felt that it didn't need to reply to an ARP packet for something it
thought was foreign. Memory was fuzzy and that was a while back. The
second machine had partial ARPs, signifying (OSIT) that it explicitly
asked for one, but hadn't yet received a reply.

I also wire ARP entries by IP address (not hostname) so *I* (not DNS)  
chose the interface.

HTH, YMMV, etc - Jy@



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