CD_CLASS_ID
(void) add_pkt_opt(dpkt, CD_CLASS_ID, class_id,
(void) add_pkt_opt(dpkt, CD_CLASS_ID, class_id, class_id_len);
(void) add_pkt_opt(dpkt, CD_CLASS_ID, class_id,
(void) add_pkt_opt(dpkt, CD_CLASS_ID, class_id,
(void) add_pkt_opt(dpkt, CD_CLASS_ID, class_id,
case CD_CLASS_ID:
dhcp_classid[0] = CD_CLASS_ID;