On Wed, 2009-06-17 at 08:11 -0500, Trey Nolen wrote: > > On Tue, 2009-06-16 at 15:40 +0200, Axel wrote: > > Le 15/06/2009 14:15, Trey Nolen a écrit : > > > Jun 15 07:09:57 stuggots NetworkManager:<info> Maximum Segment Size > > > (MSS): 0 > > > > > > > It could be the problem. It seems that no MTU is defined. > > Once your VPN connection is established, try to type the command : "sudo > > ifconfig ppp0 mtu 1412" in a terminal and try again to create some > > traffic, like your remote desktop session. > > > > It may be related to this bug : > > http://bugzilla.gnome.org/show_bug.cgi?id=559116 , but from this bug : > > "Latest 0.7.1rc1 PPTP plugin uses 1400 as the default MTU." but your > > version looks like to be 0.7.1rc4. > > I found that bug, too. You may have missed one of my later emails where > I state that I have an MTU of 1400 when I am connected. Below is output > from ifconfig when I'm connected: > > ppp0 Link encap:Point-to-Point Protocol > inet addr:192.168.4.107 P-t-P:192.168.4.107 > Mask:255.255.255.255 > UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1400 Metric:1 > RX packets:11 errors:0 dropped:0 overruns:0 frame:0 > TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:3 > RX bytes:291 (291.0 B) TX bytes:228 (228.0 B) > > > > > I did try your suggestion of changing the MTU to 1412, but it had no > effect. I run Hardy (Ubuntu 8.04) on another of my computers and I have > noticed that the inet address and the P-t-P address are different when > I'm connected to a VPN with it. Could that be a source of the issue? >
Well, I know there wasn't much interest in this issue, but I finally resolved it so I figured I'd post the resolution anyway. At home, I was able to reproduce the problem with both my desktop and my laptop (both running Jaunty). I went to a restaurant that had wifi with my laptop and noticed that my VPNs would stay connected. So, I realized it had to be something on my home network. Since MTUs had been mentioned before (regarding the PPP interface), I adjusted those on my router, and it fixed the problem. Normally, when I have an MTU issue on a router connected to the internet, it results in problems with certain websites and/or slow speed on sites. I had neither of these issues, but the VPNs would drop and now do not. Maybe this will help someone else with this unusual issue. Trey Nolen _______________________________________________ NetworkManager-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/networkmanager-list
