Sat Oct 30 02:43:04 PDT 1993

This is a network manager's utility for 'mapping' all or part of a
DVMRP-based multicast backbone such as the MBone.  It can be used
either stand-alone to determine the multicast topology or in
conjunction with mrdebug(1) to determine multicast routes.

Note that since mrmap has to do i/o to a raw igmp socket, it must
either but installed suid to root or run by root.  (We suggest the
latter -- there's no reason casual users should run this program
and no reason to run it so frequently that installing it suid
would have any advantage.)

In addition to the binary, source, makefile & man page, this directory
should contain two awk scripts:  "mergemaps map1 map2 ..." will merge
the information from multiple mrmap runs into a single map file.
"comparemaps map1 map2" will compare two map files & print their
differences.

Please let us know of any problems, questions, suggestions, etc., via
mail to mrmap@ee.lbl.gov.  Thanks.

 - Van Jacobson (van@ee.lbl.gov)