<p dir="ltr">Have anything to do with firewall locations, meaning home vs work vs public vs lockdown. Probably not it at all.</p>
<div class="gmail_quote">On Jul 13, 2016 3:22 PM, "Etienne Dechamps" <<a href="mailto:etienne@edechamps.fr">etienne@edechamps.fr</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">That's strange. Can you post a detailed log from the affected node (run tincd -d5 -D), especially the initialization phase?<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 13 July 2016 at 16:17, Petr Man <span dir="ltr"><<a href="mailto:petr@madnetwork.org" target="_blank">petr@madnetwork.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear all,<div><br></div><div>I have been successfully running for quite some time a tinc 1.1 network in switch mode. I recently added a new node, that refuses to communicate over UDP.</div><div>Running "tinc info mynode" from a different box returns:</div><div>Reachability: directly with TCP<br></div><div><br></div><div>It appears that tincd is not listening on UDP port 655 on "mynode". Running "ss -nlptu | grep tincd":</div><div>tcp LISTEN 0 3 *:655 *:* users:(("tincd",pid=10097,fd=6))<br></div><div><br></div><div>In the log there is a large number of these messages:</div><div>Received UDP packet from unknown source 123.321.123.321 port 655<br></div><div><br></div><div>I am puzzled how is tincd getting the packets if it is not listening on 655/UDP.</div><div><br></div><div>When I start netcat on the node on port 655/UDP I can see garbage coming in from the other nodes trying to initiate an UDP connection.</div><div><br></div><div>Would you have any hints where to start debugging this? All machines are configured the same way and work fine (various linux versions, windows). This particular box is on Ubuntu Xenial kernel 4.3.5.</div><div><br></div><div>Best,</div><div>Petr</div></div>
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