On 7 Apr 1996, Charles M. Hannum wrote:
> The current algorithm used by telnetd is:
> 
> * If the host name is more than 16 characters, store the IP address.
> * Otherwise, store the host name.

I think it'd be cool if rlogind did the same thing, btw. See PR #1946 :)
--
Name: Dave Huang     |   Mammal, mammal / their names are called /
INet: khym@bga.com   |   they raise a paw / the bat, the cat /
FurryMUCK: Dahan     |   dolphin and dog / koala bear and hog -- TMBG
Dahan: Hani G Y+C 20 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++