* freebsd3/sys/netinet6/udp6_usrreq.c: fix panic on udp6_ctlinput.   from: ume@mahoroba.org * kame/rtadvd: obey RFC2461 6.2.5 on SIGTERM.
* freebsd3/sys/netinet6/udp6_usrreq.c: fix panic on udp6_ctlinput.
  from: ume@mahoroba.org
* kame/rtadvd: obey RFC2461 6.2.5 on SIGTERM.

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