<div>Does this mean I will need to manually set the PMTU value, or is the default value of 1518 (I think?) okay?</div>
<div> </div>
<div>If not, do you have a suggested value?</div>
<div> </div>
<div>Thank you for your help as always,</div>
<div> </div>
<div>Donald<br><br></div>
<div class="gmail_quote">On Fri, Mar 6, 2009 at 5:53 PM, Guus Sliepen <span dir="ltr"><<a href="mailto:guus@tinc-vpn.org">guus@tinc-vpn.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">On Thu, Mar 05, 2009 at 07:02:53PM -0500, Donald Pearson wrote:<br><br>[...]<br>
<div class="im">> I removed the Compression line from the hosts files, and went back to the<br>> working UDP configuration that gave me 2MB/sec.<br>><br>> However the problem did not go away. I say I think there is an IP/UDP frame<br>
> size issue because the firewall software I use, SoftPerfect Personal<br>> Firewall, is reporting this error in it's logs when I try to do something<br>> like a file transfer.<br>><br>> I am able to ping between hosts with packet sizes up to 1417 bytes.<br>
><br>> I did some testing with setting the PMTU value and setting PMTUDiscover =<br>> no, however it had no affect.<br><br></div>It seems there is a problem if both PMTUDiscovery and Compression is used.<br>Another problem is that both sides must have PMTUDiscovery = no, otherwise it<br>
will still be enabled anyway. Michael Tokarev has also seen this problem. I'll<br>have a better look at the code and I'll try to reproduce it myself, and see if<br>I can fix it.<br><br>In the mean time, the workaround is to explicitly disable PMTUDiscovery and<br>
Compression.<br><font color="#888888"><br>--<br>Met vriendelijke groet / with kind regards,<br> Guus Sliepen <<a href="mailto:guus@tinc-vpn.org">guus@tinc-vpn.org</a>><br></font><br>-----BEGIN PGP SIGNATURE-----<br>
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