f a specific interface.</p>
<p>If an IP version 6 (IPv6) address is used, both IP version 6
(IPv6) and version 4 (IPv4) connections will be accepted. To
restrict this to version 6 (IPv6) only, use <code>v6Only</code> to set
version 6 only.</p>
<p>If <code>port</code> has the value <code>0</code> an ephemeral port will be chosen by
the system. The actual port used can be retrieved using the
<code>port</code> getter.</p>
<p>The optional argument <code>backlog</code> can be used to specify the listen
backlog f