<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><br class=""><blockquote type="cite" class=""><div class="">How have you determined this? Have you tried connecting to its IPv4 address <br class="">and encountered an error? If so, what is that error?<br class=""><br class="">What does the output of "netstat -lptn | grep 3128" show?<br class=""><br class=""></div></blockquote><br class=""></div><div>That’s exactly how I determined this. The output from netstat -ltpn is just one line:</div><div><br class=""></div><div><div style="margin: 0px; font-size: 11px; font-family: Menlo;" class="">tcp6 0 0 :::<span style="font-variant-ligatures: no-common-ligatures; color: #c33720" class=""><b class="">3128</b></span> :::* LISTEN</div></div></body></html>