nr_disconnect
void nr_disconnect(struct sock *, int);
nr_disconnect(s, ENETUNREACH);
nr_disconnect(sk, 0);
nr_disconnect(sk, ECONNRESET);
nr_disconnect(sk, ECONNRESET);
nr_disconnect(sk, 0);
nr_disconnect(sk, ECONNRESET);
nr_disconnect(sk, 0);
nr_disconnect(sk, ECONNRESET);
nr_disconnect(sk, ECONNRESET);
nr_disconnect(sk, ECONNREFUSED);
nr_disconnect(sk, ENETUNREACH);
nr_disconnect(sk, ETIMEDOUT);
nr_disconnect(sk, ETIMEDOUT);
nr_disconnect(sk, ETIMEDOUT);