DHCPV6_OPT_RECONF_MESSAGE = 19,
DHCPV6_OPT_RECONF_ACCEPT = 20,
DHCPV6_OPT_DNS_SERVERS = 23,
DHCPV6_OPT_DNS_DOMAIN = 24,
DHCPV6_OPT_IA_PD = 25,
DHCPV6_OPT_IA_PREFIX = 26,
DHCPV6_OPT_RECONF_MESSAGE = 19,
DHCPV6_OPT_RECONF_ACCEPT = 20,
DHCPV6_OPT_DNS_SERVERS = 23,
DHCPV6_OPT_DNS_DOMAIN = 24,
DHCPV6_OPT_IA_PD = 25,
DHCPV6_OPT_IA_PREFIX = 26,