Hmm. Due to an `interesting way' in which I implimented the main loop
that searches for a YP server (by looking at the binding files or
talking ypbind via sockets), old programs running in a new YP
environment will continue to work. Lookie here:

[gecko deraadt 64 ]> finger deraadt
yp_first: clnt_call: RPC: Unable to send; errno = Address family not supported by protocol family
Login: deraadt                          Name: 
Directory: /home/staff/deraadt          Shell: /bin/csh
On since Fri Dec  3 02:36 (MST) on ttyp0, idle 1:25, from newt.fsa.ca
On since Fri Dec  3 03:48 (MST) on ttyp1 from newt.fsa.ca
On since Fri Dec  3 03:55 (MST) on ttyp2, idle 1:26, from newt.fsa.ca
No Mail.
No Plan.

(Basically: after the program discovers the bindings file to be bogus,
it communicates directly with ypbind via the socket. Naturally, that
interface hasn't changed.)

Just a little error message on startup, nothing that's gonna kill
anyone...

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