mcaddr
static int t4_mc_multicst(void *arg, boolean_t add, const uint8_t *mcaddr);
t4_mc_multicst(void *arg, boolean_t add, const uint8_t *mcaddr)
bcopy(mcaddr, &c.u.exact[0].macaddr, ETHERADDRL);
struct mcaddr *ac_mcaddr; /* table of multicast addrs */