int sd_dhcp6_client_set_index(sd_dhcp6_client *client, int interface_index);
int sd_dhcp6_client_set_mac(sd_dhcp6_client *client,
const struct ether_addr *mac_addr);
-int sd_dhcp6_client_set_duid(sd_dhcp6_client *client, uint8_t *duid,
+int sd_dhcp6_client_set_duid(sd_dhcp6_client *client, uint16_t type, uint8_t *duid,
size_t duid_len);
int sd_dhcp6_client_set_request_option(sd_dhcp6_client *client,
uint16_t option);