Changed ICMP "unreachable" code #defines to match the ones in tcpdump/print-icmp.c since they were in BSD first.
Changed ICMP "unreachable" code #defines to match the ones in
tcpdump/print-icmp.c since they were in BSD first.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars