If you set -DUSEMIB in the Makefile, then /etc/mib.txt must exist and
any /etc/*.conf files you create (which are used by the snmpd code) may 
use symbolic OIDs.  No sample /etc/*.conf are distributed with this
release (and none are required to run this code), since SNMPv2 is 
currently being revised.  If you're already using some though, you're
still fine.

Otherwise (if USEMIB is not defined), all OIDs must use numeric form only.  
This is the default, so we don't have to require installation of 
/etc/mib.txt in order to run mrouted.

This snmpd code has been tested under SunOS, FreeBSD, and Ultrix.  It
may or may not work on other platforms.

Dave Thaler <thalerd@eecs.umich.edu>
