- make sure int is in running state before touching the multicast filter - remove song and dance with IFF_UP, based on NetBSD commit to mc(4)
- make sure int is in running state before touching the multicast filter
- remove song and dance with IFF_UP, based on NetBSD commit to mc(4)

ok martin@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars