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submitting them as context diffs for the following files: sys/netinet/ip_mroute.c sys/netinet/ip_var.h sys/netinet/raw_ip.c usr.sbin/mrouted/igmp.c usr.sbin/mrouted/prune.c The routine rip_ip_input in raw_ip.c is suggested by Mark Tinguely (tinguely@plains.nodak.edu). I have been running mrouted with these patches for over a week and nothing has seemed seriously wrong. It is being run in two places on our network as a tunnel on one and a subnet querier on the other. The only problem I have run into is that mrouted on the tunnel must start up last or the pruning isn't done correctly and multicast packets flood your subnets. Submitted by: Soochon Radee <slr@mitre.org>