I was able to solve my own problem, about 10 minutes after posting for
help . (It's suprising how often that happens -- it's true that posting
to the net will solve your problem.)
In case it will help anyone, here's the saga --
1) Something was broken in the SLS 1.03 version from the middle
of August. No combination of ifconfig and route commands gave anything
except Network unreachable.
2) Following a hint from the net, (from J. Scott Farrow,
I reinstalled with the latest version
(Aug 30, I think). Now for the first time I got different and less
boring error messages.
3) Following the NET-2 how-to, a detailed set of instructions posted by
Linus, and some guesswork I discovered that my network isn't
x.x.x.0, but x.x.0.0. Using that, and issuing ifconfig and route
commands by hand, I was able to get telnet and ftp working.
4) After playing around with security on my Vaxstation I was able to
get the linux box to display on it. I thought I was home free.
But I couldn't get Linux to display X from the vax.
5) After looking everywhere I could think of, I posted the cry for help.
While in the news reader, I tried a search for all subjects containing
" X ". Among them I found a note from
which pointed me at the correct Xserver, and from
who said " ...setuid your X server to root..."
and it all worked. Seeing my images show up on the 486 was a real
treat. Thanks to all who helped, and to the Linux community in general
for producing a very nice package.