tinc never using UDP for data

[Nikolaus Rath]

Marwan Gedeon <marwan-cpYkUDY9fzsdnm+yROfE0A at public.gmane.org> writes:
> Hello list,
> I looked around online but didn't find an answer, so if you can help
> me out, I'll appreciate
> I'm trying to create a tinc network which transmits data as UDP and
> not TCP, because I will pass VoIP traffic on top of it, which would
> not work fine if using TCP.
> I have configured tinc between 2 machines and it's working fine,
> default ports open (UDP 655 and TCP 655) and I have tested with netcat
> that I can transmit data over UDP between the 2 hosts
> However, whenever I bring up tinc network,and try to transmit files
> over it, they are going over TCP.
> I have read that tinc will try to use UDP for data and automatically
> fall back to TCP, but I can't understand in my case why UDP is not
> being used for data.
> I appreciate some help to understand why UDP is not used so I fix the
> problem causing this and make it used for data transmission.

I'd recommend to run tinc with -d4 to get some more information and (if
that doesn't help already) include the output in your question.

Best,
-Nikolaus

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