-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_mac(sd_dhcp6_client *client, const uint8_t *addr,
+ size_t addr_len, uint16_t arp_type);
+int sd_dhcp6_client_set_duid(sd_dhcp6_client *client, uint16_t type, uint8_t *duid,