gen_hostop6
b0 = gen_hostop6(addr, mask, Q_SRC, proto, src_off, dst_off);
b1 = gen_hostop6(addr, mask, Q_DST, proto, src_off, dst_off);
b0 = gen_hostop6(addr, mask, Q_SRC, proto, src_off, dst_off);
b1 = gen_hostop6(addr, mask, Q_DST, proto, src_off, dst_off);
return gen_hostop6(addr, mask, dir, ETHERTYPE_IPV6,
static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);