+static void test_route(void) {
+ _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req;
+ uint32_t addr = htonl(INADDR_LOOPBACK);
+ uint32_t index = 2;
+ uint16_t type;
+ void *data;
+ int r;
+
+ r = sd_rtnl_message_route_new(RTM_NEWROUTE, AF_INET, 0, 0, 0,
+ RT_TABLE_MAIN, RT_SCOPE_UNIVERSE, RTPROT_BOOT,
+ RTN_UNICAST, 0, &req);
+ if (r < 0) {
+ log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r));
+ return;
+ }
+
+ r = sd_rtnl_message_append(req, RTA_GATEWAY, &addr);
+ if (r < 0) {
+ log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
+ return;
+ }
+
+ r = sd_rtnl_message_append(req, RTA_OIF, &index);
+ if (r < 0) {
+ log_error("Could not append RTA_OIF attribute: %s", strerror(-r));
+ return;
+ }
+
+ assert(sd_rtnl_message_read(req, &type, &data) > 0);
+ assert(type == RTA_GATEWAY);
+ assert(*(uint32_t *) data == addr);
+
+ assert(sd_rtnl_message_read(req, &type, &data) > 0);
+ assert(type == RTA_OIF);
+ assert(*(uint32_t *) data == index);
+}
+