Add SIOCADDMULTI and SIOCDELMULTI ioctl handlers. Without them IPv6 does not work. Issue reported by brad@  OK mglocker@
Add SIOCADDMULTI and SIOCDELMULTI ioctl handlers. Without them IPv6 does
not work. Issue reported by brad@  OK mglocker@

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