cache validity check is made in in6_selectsrc() called from ip6_output(), therefore, !IN6_ARE_ADDR_EQUAL() was not necessary here.  comments from jinmei
cache validity check is made in in6_selectsrc() called from ip6_output(),
therefore, !IN6_ARE_ADDR_EQUAL() was not necessary here.  comments from jinmei

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