Notes on ScopePort » ubuntu http://blog.scopeport.org The ScopePort Blog Sun, 07 Feb 2010 01:08:43 +0000 http://wordpress.org/?v=2.9.1 en hourly 1 VPN connection in Ubuntu Intrepid fails? http://blog.scopeport.org/internet/vpn-connection-ubuntu-intrepid-fails/ http://blog.scopeport.org/internet/vpn-connection-ubuntu-intrepid-fails/#comments Thu, 19 Mar 2009 10:39:11 +0000 Lennart http://blog.scopeport.org/?p=171 I had this problem for a longer time now: When I established a VPN connection on Ubuntu Intrepid it just failed after a few seconds or minutes. This did not happen in the earlier Ubuntu versions.

The error in the syslog was: “nm-pptp-service-9656 warn[decaps_gre:pptp_gre.c:331]: short read (-1): Message too long”

There is a very simple solution for that: Just set the MTU of your VPN connection to 1412 and the connection should stay alive! (sudo ifconfig ppp0 mtu 1412)

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