int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server, struct in_addr *start, size_t size);
int sd_dhcp_server_forcerenew(sd_dhcp_server *server);
int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server, struct in_addr *start, size_t size);
int sd_dhcp_server_forcerenew(sd_dhcp_server *server);