Den MTU Wert sollte man wenn geht nicht verändern, da es dafuer eigene ICMP Pakete gibt (ICMP Need Fragmentation), die Winroute aber per default nicht korrekt behandelt.
Ein Auszug aus der Winroute FAQ dazu:
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My error log reports WRSendPacket() failed. What does this mean and how do I fix it?
If you are a PPPoE user with the NTS Enternet 300 software please refer to our separate PPPoE page. The WRSendPacket() failed error typically means that WinRoute is receiving fragmented packets and is unable to properly route them. We have found this issue to be resolved, in most cases, by making a modification to the registry. First you will need to stop the WinRoute engine. Proceed to the registry editor, run -> regedit. Follow the path Hkey_Local_Machine -> Software -> TinySoftware -> WinRoute. In the right screen find IpFragMode. Modify its value to 1 and exit regedit, then restart the WinRoute engine. If the problem persists please email
[email protected] and attach your wrdrv.log file.
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