ETHERMTU_JUMBO
if (ifp->if_mtu > ETHERMTU_JUMBO)
ETHERMTU_JUMBO + ETHER_HDR_LEN, 16);
if (ifp->if_mtu > ETHERMTU_JUMBO)
if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU_JUMBO)
#define RE_JUMBO_MTU ETHERMTU_JUMBO
if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU_JUMBO)
maxmtu = ETHERMTU_JUMBO;