separately open sockets for multicast joining, it seems that we do not get traffic if we join on "s" (need checking) don't segv on ping6 -W.
separately open sockets for multicast joining, it seems that we do not get
traffic if we join on "s" (need checking)
don't segv on ping6 -W.

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