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From: lekash@ORVILLE.ARPA (John Lekashman)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  ISO8473 vs. IP
Message-ID: <8709092112.AA07299@orville.arpa>
Date: Wed, 9-Sep-87 17:12:06 EDT
Article-I.D.: orville.8709092112.AA07299
Posted: Wed Sep  9 17:12:06 1987
Date-Received: Fri, 11-Sep-87 06:04:27 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 8

One of the two unused bits in the type of service field.  I vote
for the end bit.  This has something to do with the class
of service experienced, rather than desired, but thats ok.  Maybe
the other bit can be set on ack's to indicate congestion
experienced on the packet(s) this is an ack for.  (After all, its
got to get back to the sender somehow.  reduced offered window
is one way, an explicit bit's another.)
					john