HelenOS sources

ETYPE_IP          190 uspace/srv/net/ethip/ethip.c 	frame.etype_len = ETYPE_IP;
ETYPE_IP          251 uspace/srv/net/ethip/ethip.c 	case ETYPE_IP:
ETYPE_IP          138 uspace/srv/net/ethip/pdu.c 	pfmt->proto_addr_space = host2uint16_t_be(ETYPE_IP);
ETYPE_IP          176 uspace/srv/net/ethip/pdu.c 		    ETYPE_IP, uint16_t_be2host(pfmt->proto_addr_space));