only
incoming connections from the local host, use the value
<a href="dart-io/InternetAddress/loopbackIPv4.html">InternetAddress.loopbackIPv4</a> or
<a href="dart-io/InternetAddress/loopbackIPv6.html">InternetAddress.loopbackIPv6</a>. To allow for incoming
connection from the network use either one of the values
<a href="dart-io/InternetAddress/anyIPv4.html">InternetAddress.anyIPv4</a> or <a href="dart-io/InternetAddress/anyIPv6.html">InternetAddress.anyIPv6</a> to
bind to all interfaces or the IP address o