Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!lll-tis!helios.ee.lbl.gov!nosc!ucsd!ucbvax!VENERA.ISI.EDU!braden
From: braden@VENERA.ISI.EDU
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  telnet...
Message-ID: <8807061654.AA01463@braden.isi.edu>
Date: 6 Jul 88 16:54:10 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 8

Bill, 

There are Telnet controls (eg IP, AO, AYT...) that can appear at any time
in the stream, and a correct implementation must check for them.  An
implementation that does not is not implementing the Telnet protocol
(RFC-764).

Bob Braden