Rlogin trouble from DS3100 to Sun 4's

[Ken Nelson]

I just brought up a DecStation 3100 running Ultrix 4.1 on my network.  It
works okay except that it doesn't like to rlogin to any Sun 4 (4/280 or
4/110) that is running SunOS 4.0.3.  It likes Sun 4s running 4.1.1, and
Sun 3s running 3.5.x. 

Telnet works fine and the DS3100 is NFS'd to the same systems it won't
rlogin to.

Has anybody experienced troubles like this?  Is there a solution?

Ken Nelson