DHCPV6_OPT_SERVERID
d6o = dhcpv6_pkt_option(msg, NULL, DHCPV6_OPT_SERVERID, &olen);
(void) add_pkt_opt(dpkt, DHCPV6_OPT_SERVERID,
(void) add_pkt_opt(dpkt, DHCPV6_OPT_SERVERID,
(void) add_pkt_opt(dpkt, DHCPV6_OPT_SERVERID,
(void) add_pkt_opt(dpkt, DHCPV6_OPT_SERVERID, dsmp->dsm_serverid,
d6o = dhcpv6_pkt_option(plp, NULL, DHCPV6_OPT_SERVERID, &olen);
case DHCPV6_OPT_SERVERID:
case DHCPV6_OPT_SERVERID: