* sys/netinet6/ip6_input.c: add missing case for net.inet6.ip6.rr_prune   for openbsd and netbsd. * netbsd/pkgsrc/net/zebra, freebsd[23]/ports/zebra: upgrade to 0.83a.
* sys/netinet6/ip6_input.c: add missing case for net.inet6.ip6.rr_prune
  for openbsd and netbsd.
* netbsd/pkgsrc/net/zebra, freebsd[23]/ports/zebra: upgrade to 0.83a.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame