static void test_basic(sd_event *event) {
_cleanup_dhcp_server_unref_ sd_dhcp_server *server = NULL;
- assert_se(sd_dhcp_server_new(&server) >= 0);
+ /* attach to loopback interface */
+ assert_se(sd_dhcp_server_new(&server, 1) >= 0);
assert_se(server);
assert_se(sd_dhcp_server_attach_event(server, event, 0) >= 0);