in add_m6fc(), set interface list for all cases. in response to a report from Hoerdt Mickael.
in add_m6fc(), set interface list for all cases.
in response to a report from Hoerdt Mickael.

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