Xenix hangs after starting TCP/IP

[18215PER at MSU.BITNET]

I've got a PC running Xenix System V 386 2.3.3, with SCO's TCP/IP version
1.0.  Everything was running fine until about a week ago.  Since then
every time I bring up TCP/IP (tcp start) while connected to the network
the system will hang within a few minutes.  Disconnected from the network
it will run without hanging up.

Has anyone run into this, or know how I might be able to fix it?

Thanks,
Phil Rieke
rieke at msuces.canr.msu.edu
18215per at ibm.cl.msu.edu