When dumping and restoring an application having an opened tcp connection you should use the <code>--tcp-established</code> option. When this option is in use crtools will leave the connection(s) locked after dump and will require it(them) to be still locked before restore.
+
When dumping and restoring an application having an opened tcp connection you should use the <code>--tcp-established</code> option. When this option is in use crtools will leave the connection(s) locked after dump and will require it(them) to be still locked before restore. There's a [[Simple_TCP_pair|HOWTO page]] describing how to play with this option.