DNETDEBUG_IF
DNETDEBUG_IF(ifp, "discard frame without packet header\n");
DNETDEBUG_IF(ifp,
DNETDEBUG_IF(ifp, "ignoring vlan packets\n");
DNETDEBUG_IF(ifp, "failed to get hw addr for interface\n");
DNETDEBUG_IF(ifp,
DNETDEBUG_IF(ifp, "dropping unknown ethertype %hu\n", etype);