Hi, had the same problem with a pptp vpn (don't ask why we use pptp). As described i had to set the MTU of the physical network adapter (e.g. eth0) to 1000 to get the VPN working without disconnectes all the time.
You can set the MTU easily via the network manager on the "ethernet" tab, but you have to restart the network stack before it gets activated (just diconnect and reconnect you normal network connection via network manager). You can find the current value of the MTU with ifconfig ... -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/991666 Title: VPN Connects Successfully & Then Shortly Thereafter Fails Status in network-manager-pptp: New Status in network-manager package in Ubuntu: Confirmed Bug description: I am able to successfully establish a PPTP VPN connection in Ubuntu 12.04 (kernel 3.2.0-24-generic) but after approximately 30 seconds to 1.5 minutes it will fail. During the connection time I am only able to load about 1-2 webpages and then they freeze and I cannot access resources on the VPN network. I do not believe this is related to my VPN server as I am able to establish VPN connections with my Windows machines and Smartphones all day long with no problems. Is there a solution to this problem? Description: Ubuntu 12.04 LTS Release: 12.04 network-manager: 0.9.4.0-0ubuntu3 Here is the syslog: Apr 30 00:17:50 satellite-p755 NetworkManager[994]: <info> Starting VPN service 'pptp'... Apr 30 00:17:50 satellite-p755 NetworkManager[994]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 15069 Apr 30 00:17:50 satellite-p755 NetworkManager[994]: <info> VPN service 'pptp' appeared; activating connections Apr 30 00:17:50 satellite-p755 NetworkManager[994]: <info> VPN plugin state changed: starting (3) Apr 30 00:17:51 satellite-p755 NetworkManager[994]: <info> VPN connection 'Schaefer Law Group' (Connect) reply received. Apr 30 00:17:51 satellite-p755 pppd[15073]: Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded. Apr 30 00:17:51 satellite-p755 pppd[15073]: pppd 2.4.5 started by root, uid 0 Apr 30 00:17:51 satellite-p755 pppd[15073]: Using interface ppp0 Apr 30 00:17:51 satellite-p755 pppd[15073]: Connect: ppp0 <--> /dev/pts/2 Apr 30 00:17:51 satellite-p755 NetworkManager[994]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Apr 30 00:17:51 satellite-p755 NetworkManager[994]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found. Apr 30 00:17:51 satellite-p755 pptp[15076]: nm-pptp-service-15069 log[main:pptp.c:314]: The synchronous pptp option is NOT activated Apr 30 00:17:51 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request' Apr 30 00:17:51 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply Apr 30 00:17:51 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established. Apr 30 00:17:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request' Apr 30 00:17:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply. Apr 30 00:17:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 0). Apr 30 00:17:55 satellite-p755 pppd[15073]: CHAP authentication succeeded Apr 30 00:17:55 satellite-p755 pppd[15073]: MPPE 128-bit stateless compression enabled Apr 30 00:17:55 satellite-p755 pppd[15073]: local IP address 192.168.1.20 Apr 30 00:17:55 satellite-p755 pppd[15073]: remote IP address 192.168.1.1 Apr 30 00:17:55 satellite-p755 pppd[15073]: primary DNS address 8.8.8.8 Apr 30 00:17:55 satellite-p755 pppd[15073]: secondary DNS address 8.8.4.4 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> VPN connection 'Schaefer Law Group' (IP Config Get) reply received. Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> VPN Gateway: 75.75.79.330 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Tunnel Device: ppp0 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Internal IP4 Address: 192.168.1.20 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Internal IP4 Prefix: 32 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Internal IP4 Point-to-Point Address: 192.168.1.1 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Maximum Segment Size (MSS): 0 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Forbid Default Route: no Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Internal IP4 DNS: 8.8.8.8 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> Internal IP4 DNS: 8.8.4.4 Apr 30 00:17:55 satellite-p755 NetworkManager[994]: <info> DNS Domain: '(none)' Apr 30 00:17:56 satellite-p755 dnsmasq[14712]: exiting on receipt of SIGTERM Apr 30 00:17:56 satellite-p755 NetworkManager[994]: <info> DNS: starting dnsmasq... Apr 30 00:17:56 satellite-p755 NetworkManager[994]: <info> (ppp0): writing resolv.conf to /sbin/resolvconf Apr 30 00:17:56 satellite-p755 dnsmasq[15128]: started, version 2.59 cache disabled Apr 30 00:17:56 satellite-p755 dnsmasq[15128]: compile time options: IPv6 GNU-getopt DBus i18n DHCP TFTP conntrack IDN Apr 30 00:17:56 satellite-p755 dnsmasq[15128]: using nameserver 8.8.4.4#53 Apr 30 00:17:56 satellite-p755 dnsmasq[15128]: using nameserver 8.8.8.8#53 Apr 30 00:17:56 satellite-p755 NetworkManager[994]: <info> VPN connection 'Schaefer Law Group' (IP Config Get) complete. Apr 30 00:17:56 satellite-p755 NetworkManager[994]: <info> Policy set 'Schaefer Law Group' (ppp0) as default for IPv4 routing and DNS. Apr 30 00:17:56 satellite-p755 NetworkManager[994]: <info> VPN plugin state changed: started (4) Apr 30 00:17:56 satellite-p755 dbus[890]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper) Apr 30 00:17:56 satellite-p755 dbus[890]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Apr 30 00:18:04 satellite-p755 ntpdate[15161]: adjust time server 91.189.94.4 offset 0.053823 sec Apr 30 00:19:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[pptp_handle_timer:pptp_ctrl.c:1050]: closing control connection due to missing echo reply Apr 30 00:19:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request' Apr 30 00:19:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[pptp_conn_close:pptp_ctrl.c:430]: Closing PPTP connection Apr 30 00:19:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 3 'Stop-Control-Connection-Request' Apr 30 00:19:52 satellite-p755 pptp[15084]: nm-pptp-service-15069 log[call_callback:pptp_callmgr.c:79]: Closing connection (call state) Apr 30 00:19:52 satellite-p755 pppd[15073]: Modem hangup Apr 30 00:19:52 satellite-p755 pppd[15073]: Connect time 2.0 minutes. Apr 30 00:19:52 satellite-p755 pppd[15073]: Sent 5296 bytes, received 1195 bytes. Apr 30 00:19:52 satellite-p755 pppd[15073]: MPPE disabled Apr 30 00:19:52 satellite-p755 pppd[15073]: Connection terminated. Apr 30 00:19:52 satellite-p755 avahi-daemon[950]: Withdrawing workstation service for ppp0. Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <info> VPN plugin state changed: stopping (5) Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <info> VPN plugin state changed: stopped (6) Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <info> VPN plugin state change reason: 0 Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <warn> error disconnecting VPN: Could not process the request because no VPN connection was active. Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <warn> (9) failed to find interface name for index Apr 30 00:19:52 satellite-p755 NetworkManager[994]: nm_system_iface_flush_routes: assertion `iface != NULL' failed Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <warn> (9) failed to find interface name for index Apr 30 00:19:52 satellite-p755 dnsmasq[15128]: exiting on receipt of SIGTERM Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <info> DNS: starting dnsmasq... Apr 30 00:19:52 satellite-p755 NetworkManager[994]: <info> (ppp0): writing resolv.conf to /sbin/resolvconf Apr 30 00:19:52 satellite-p755 dnsmasq[15196]: started, version 2.59 cache disabled Apr 30 00:19:52 satellite-p755 dnsmasq[15196]: compile time options: IPv6 GNU-getopt DBus i18n DHCP TFTP conntrack IDN Apr 30 00:19:52 satellite-p755 dnsmasq[15196]: using nameserver 192.168.1.1#53 Apr 30 00:19:53 satellite-p755 NetworkManager[994]: <info> Policy set 'dd-wrt' (wlan0) as default for IPv4 routing and DNS. Apr 30 00:19:53 satellite-p755 NetworkManager[994]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Apr 30 00:19:53 satellite-p755 dbus[890]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper) Apr 30 00:19:53 satellite-p755 dbus[890]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Apr 30 00:19:53 satellite-p755 pppd[15073]: Exit. Apr 30 00:19:58 satellite-p755 NetworkManager[994]: <info> VPN service 'pptp' disappeared Apr 30 00:21:01 satellite-p755 dbus[890]: [system] Activating service name='org.gnome.SettingsDaemon.DateTimeMechanism' (using servicehelper) Apr 30 00:21:01 satellite-p755 dbus[890]: [system] Successfully activated service 'org.gnome.SettingsDaemon.DateTimeMechanism' Apr 30 00:21:36 satellite-p755 dbus[890]: [system] Activating service name='org.gnome.SettingsDaemon.DateTimeMechanism' (using servicehelper) To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager-pptp/+bug/991666/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
