Thank you, David Sommerseth! It definitely is my ISP. They are limiting my MTU to 576. I already opened a support ticket. Switching to TCP is a bit of a problem because of firewalls on the server side.
The tunnel works now by using fragment 125 - but it's really really slow. Still, for a temporary workaround it is okay. Greetings, Richard Am Dienstag, 26. November 2013, 12:14:22 schrieben Sie: > On 26. nov. 2013 00:30, Chain von den Keiya wrote: > > Hello everybody! > > > > I am trying to set up a tunnel - but whatever I tried, nothing > > more than ping and some HTTP Requests even worked. I tried > > different MTU sizes. I tried other firewall setups. I tried > > disabling QoS. And then I tried the MTU test. After a lot of > > "Message too long (code=90)" errors, I got this: > > > > Tue Nov 26 00:18:10 2013 us=597561 NOTE: Empirical MTU test > > completed [Tried,Actual] local->remote=[126,125] > > remote->local=[1541,1541] Tue Nov 26 00:18:10 2013 us=598330 NOTE: > > This connection is unable to accomodate a UDP packet size of 126. > > Consider using --fragment or --mssfix options as a workaround. > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > Please read the line above carefully. > > Other alternatives are to test with a different ISP and/or test with > TCP instead of UDP. But wouldn't surprise me if it's your ISP giving > you an headache. > > Generally UDP is preferred over TCP due to performance and avoiding > TCP-over-TCP scenarios., but sometimes TCP is the only thing which works. > > > -- > kind regards, > > David Sommerseth > gpgkeys: HTTP fetch error 6: Could not resolve host: wwwkeys.eu.pgp.net ------------------------------------------------------------------------------ Shape the Mobile Experience: Free Subscription Software experts and developers: Be at the forefront of tech innovation. Intel(R) Software Adrenaline delivers strategic insight and game-changing conversations that shape the rapidly evolving mobile landscape. Sign up now. http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk _______________________________________________ Openvpn-users mailing list Openvpn-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openvpn-users
