+ size_t namelen = strlen(iface->name) + 1;
+ c = malloc(sizeof(*c) + namelen);
+ c->length = iface->assignment_length;
+ c->assigned = iface->assignment_hint;
+ c->enabled = false;
+ memcpy(c->name, iface->name, namelen);
+
+ // First process all custom assignments, put all others in later-list
+ if (c->assigned == -1 || !interface_prefix_assign(&prefix->assignments, c)) {
+ if (c->assigned != -1) {
+ c->assigned = -1;
+ netifd_log_message(L_WARNING, "Failed to assign requested subprefix "
+ "of size %hhu for %s, trying other\n", c->length, c->name);
+ }
+
+ struct list_head *next = &assign_later;
+ struct device_prefix_assignment *n;
+ list_for_each_entry(n, &assign_later, head) {
+ if (n->length < c->length) {
+ next = &n->head;
+ break;
+ }
+ }
+ list_add_tail(&c->head, next);
+ }
+
+ if (c->assigned != -1)
+ assigned_any = true;
+ }
+
+ // Then try to assign all other + failed custom assignments
+ while (!list_empty(&assign_later)) {
+ c = list_first_entry(&assign_later, struct device_prefix_assignment, head);
+ list_del(&c->head);
+
+ bool assigned = false;
+ do {
+ assigned = interface_prefix_assign(&prefix->assignments, c);
+ } while (!assigned && ++c->length <= 64);
+
+ if (!assigned) {
+ netifd_log_message(L_WARNING, "Failed to assign subprefix "
+ "of size %hhu for %s\n", c->length, c->name);
+ free(c);
+ } else {
+ assigned_any = true;
+ }
+ }
+
+ list_for_each_entry(c, &prefix->assignments, head)
+ if ((iface = vlist_find(&interfaces, c->name, iface, node)))
+ interface_set_prefix_address(c, prefix, iface, true);
+
+ if (!assigned_any)
+ netifd_log_message(L_WARNING, "You have delegated IPv6-prefixes but haven't assigned them "
+ "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
+}