Subject: Re: your mail
To: None <,>
From: None <>
List: current-users
Date: 04/12/1994 17:15:35
   [...], if I telnet into my machine via term it shows my machine's
   name as just an IP number, [...]

This was a design decision in the new telnetd.  If the host name is longer
than ut_host, the IP address is used instead.