+ r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
+ if (r < 0) {
+ log_error("Could not append IFA_BROADCAST attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (address->label) {
+ r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label);
+ if (r < 0) {
+ log_error("Could not append IFA_LABEL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo);
+ if (r < 0) {
+ log_error("Could not append IFA_CACHEINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+ if (r < 0) {
+ log_error("Could not send rtnetlink message: %s", strerror(-r));
+ return r;
+ }
+
+ link_ref(link);
+
+ return 0;
+}
+
+static int address_acquire(Link *link, Address *original, Address **ret) {
+ union in_addr_union in_addr = {};
+ struct in_addr broadcast = {};
+ _cleanup_address_free_ Address *na = NULL;
+ int r;
+
+ assert(link);
+ assert(original);
+ assert(ret);
+
+ /* Something useful was configured? just use it */
+ if (in_addr_is_null(original->family, &original->in_addr) <= 0)
+ return 0;
+
+ /* The address is configured to be 0.0.0.0 or [::] by the user?
+ * Then let's acquire something more useful from the pool. */
+ r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr);
+ if (r < 0) {
+ log_error_link(link, "Failed to acquire address from pool: %s", strerror(-r));
+ return r;
+ }
+ if (r == 0) {
+ log_error_link(link, "Couldn't find free address for interface, all taken.");
+ return -EBUSY;
+ }
+
+ if (original->family == AF_INET) {
+ /* Pick first address in range for ourselves ...*/
+ in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1);
+
+ /* .. and use last as broadcast address */
+ broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen);
+ } else if (original->family == AF_INET6)
+ in_addr.in6.s6_addr[15] |= 1;
+
+ r = address_new_dynamic(&na);
+ if (r < 0)
+ return r;
+
+ na->family = original->family;
+ na->prefixlen = original->prefixlen;
+ na->scope = original->scope;
+ na->cinfo = original->cinfo;
+
+ if (original->label) {
+ na->label = strdup(original->label);
+ if (!na->label)
+ return -ENOMEM;
+ }
+
+ na->broadcast = broadcast;
+ na->in_addr = in_addr;