+ case DHCP_RELEASE: {
+ int pool_offset;
+
+ log_dhcp_server(server, "RELEASE (0x%x)",
+ be32toh(req->message->xid));
+
+ if (!existing_lease)
+ return 0;
+
+ if (existing_lease->address != req->message->ciaddr)
+ return 0;
+
+ pool_offset = get_pool_offset(server, req->message->ciaddr);
+ if (pool_offset < 0)
+ return 0;
+
+ if (server->bound_leases[pool_offset] == existing_lease) {
+ server->bound_leases[pool_offset] = NULL;
+ hashmap_remove(server->leases_by_client_id, existing_lease);
+ dhcp_lease_free(existing_lease);
+
+ return 1;
+ } else
+ return 0;
+ }