[mod.protocols.tcp-ip] 4.3 telnet/break

mtasman@CCT.BBN.COM.UUCP (12/16/86)

     I believe that some versions of the TAC will transmit an "IAC BREAK" when
a user hits the "BREAK" key.

     This may explain why 4.3 telnet servers occasionally receive "IAC BREAK"
on TAC connections.