Path: utzoo!utgpu!attcan!uunet!lll-winken!lll-ncis!helios.ee.lbl.gov!pasteur!ucbvax!hplabs!hpda!hpcuhb!hpindda!subbu
From: subbu@hpindda.HP.COM (MCV Subramaniam)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: connection between ARP and ICMP...
Message-ID: <6200015@hpindda.HP.COM>
Date: 6 Jan 89 16:51:17 GMT
References: <8901052354.AA05731@beta.lanl.gov>
Organization: HP Information Networks, Cupertino, CA
Lines: 10

Mitchel,

I think ICMP unreachable message should not be generated if the gateway 
can find a route to the destination. If there is no routing entry by which
the gateway can access the destination, then the gateway should not ARP for
the destination at all, but just send the Unreachable message to the source.

Hope this helps.

-Subbu