MF6CHASH
hash = MF6CHASH(origin.sin6_addr, mcastgrp.sin6_addr);
hash = MF6CHASH(ip6->ip6_src, ip6->ip6_dst);
for (struct mf6c *rt = mfct->mfchashtbl[MF6CHASH(*origin, *group)];
hash = MF6CHASH(mfccp->mf6cc_origin.sin6_addr,