+ r = instance_from_socket(cfd, s->n_accepted, &instance);
+ if (r < 0) {
+ if (r != -ENOTCONN)
+ goto fail;
+
+ /* ENOTCONN is legitimate if TCP RST was received.
+ * This connection is over, but the socket unit lives on. */
+ close_nointr_nofail(cfd);
+ return;
+ }