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Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!info-vax
From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: Re: Pinging gateways
Message-ID: <2494@ucbvax.ARPA>
Date: Fri, 12-Oct-84 08:39:24 EDT
Article-I.D.: ucbvax.2494
Posted: Fri Oct 12 08:39:24 1984
Date-Received: Sat, 13-Oct-84 06:55:12 EDT
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 15

From: Dan Grim 

We saw exactly the same behavior here at Delaware when machines on
two separate local nets could not connect in one direction when they
could in the other.  Our problem turned out to be that one of our
multiply connected machines (arpa and local ethernet) was sending its
arpa internet address as the source address in the IP packets and the
machine on the other local net apparently had the wrong routes installed
to reply.  That machine could reach other arpa hosts however so it is
not as simple a problem as it may seem.  The outcome is that routing on
intermediate hosts seemed to be able to cause the assymetric behavior.

				Dan Grim 
				Dept of Electrical Engineering
				University of Delaware