+ set) try ip route add $r6addr proto static dev "$ifname" ;;
+ esac
+ ;;
+esac
+
+###--------------------------------------------------------------------------
+### Bring the interface up.
+
+case $haveaddr4,$haveaddr6 in
+ nil,nil)
+ ;;
+ *)
+ case "${P_MTU+set}" in
+ set)
+ mtu=$P_MTU;;
+ *)
+ pathmtu=$(pathmtu "$addr")
+ mtu=$(expr "$pathmtu" - 29 - $A_BULK_OVERHEAD)
+ ;;