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To: Nate Williams <nate@sri.mt.net>
cc: stable@freebsd.org, current@freebsd.org, hackers@freebsd.org
Subject: Re: Possible solution to the Proxy-ARP bug enclosed 
In-reply-to: Your message of "Fri, 19 Jan 1996 20:50:27 PST."
             <199601200450.VAA17390@rocky.sri.MT.net> 
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Date: Mon, 22 Jan 1996 10:17:17 PST
From: Bill Fenner <fenner@parc.xerox.com>
Message-Id: <96Jan22.101729pst.177478@crevenia.parc.xerox.com>
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For those reviewing my patch that Nate sent out, I plan to remove the final 
piece of the new if (the requirement that it's an -unresolved- ARP entry); a 
host route should always override an ARP cache entry (think about a mobilip 
proxy thingy; a machine is on the net one second and the next it's mobile but 
you still have an ARP cache entry for it).

The user-space arp program also needs some fixes to make it harder to create 
strange proxy entries.  It's still possible to have three different ARP table 
entries for the same host if you are sufficiently confused about it, and 
/usr/sbin/arp can make things pretty confusing =)

  Bill