Several people have reported the problem here (Ecole Polytechnique) when connecting to a pptp VPN with either Ubuntu Feisty or Hardy. We probably have a big bad router which messes the MTU negotiation and the MTU must be set explicitly to a value below 1400. Setting the MTU in /etc/ppp/options or through a script in /etc/network/if-up.d does not work either; presumably network manager comes afterwards and forces arbitrarily the MTU to 1412. Thus, each time the VPN connection is established, entering afterwards in a console the following command fixes the problem as suggested by Ironphil.
sudo ifconfig ppp0 mtu 1300 Fortunately, the source package for network-manager in Intrepid alpha (8.10 alpha) appears to be fixed. -- network-manager-pptp does not change mtu even if specified https://bugs.launchpad.net/bugs/151112 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
