PACKET_VNET_HDR
SOL_PACKET, PACKET_VNET_HDR,
case PACKET_VNET_HDR:
case PACKET_VNET_HDR:
if (setsockopt(fd, SOL_PACKET, PACKET_VNET_HDR, &one, sizeof(one)))
setsockopt(fd, SOL_PACKET, PACKET_VNET_HDR, &one, sizeof(one)))