народ. теперь даже с 3g (usb-modem) вкладка VPN подключения активна.
только вот незадача - не подключается собака такая

.
вот логи
Sep 17 00:49:02 sergmasters NetworkManager[705]: <info> Starting VPN service 'pptp'...
Sep 17 00:49:02 sergmasters NetworkManager[705]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 1588
Sep 17 00:49:02 sergmasters NetworkManager[705]: <info> VPN service 'pptp' appeared; activating connections
Sep 17 00:49:09 sergmasters NetworkManager[705]: <info> VPN plugin state changed: 3
Sep 17 00:49:09 sergmasters NetworkManager[705]: <info> VPN connection 'VPN-соединение 1' (Connect) reply received.
Sep 17 00:49:09 sergmasters pppd[1594]: Plugin /usr/lib/pppd/2.4.5//nm-pptp-pppd-plugin.so loaded.
Sep 17 00:49:09 sergmasters pppd[1594]: pppd 2.4.5 started by root, uid 0
Sep 17 00:49:09 sergmasters pppd[1594]: Using interface ppp1
Sep 17 00:49:09 sergmasters pppd[1594]: Connect: ppp1 <--> /dev/pts/0
Sep 17 00:49:09 sergmasters NetworkManager[705]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp1, iface: ppp1)
Sep 17 00:49:09 sergmasters NetworkManager[705]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp1, iface: ppp1): no ifupdown configuration found.
Sep 17 00:49:10 sergmasters pptp[1599]: nm-pptp-service-1588 log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Sep 17 00:49:12 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
Sep 17 00:49:12 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
Sep 17 00:49:12 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
Sep 17 00:49:13 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Sep 17 00:49:13 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
Sep 17 00:49:13 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 59725).
Sep 17 00:49:15 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:950]: PPTP_SET_LINK_INFO received from peer_callid 0
Sep 17 00:49:15 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:953]: send_accm is 00000000, recv_accm is FFFFFFFF
Sep 17 00:49:15 sergmasters pptp[1622]: nm-pptp-service-1588 warn[ctrlp_disp:pptp_ctrl.c:956]: Non-zero Async Control Character Maps are not supported!
Sep 17 00:49:15 sergmasters pppd[1594]: MS-CHAP authentication failed: E=691 Authentication failure
Sep 17 00:49:15 sergmasters pppd[1594]: CHAP authentication failed
Sep 17 00:49:16 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:950]: PPTP_SET_LINK_INFO received from peer_callid 0
Sep 17 00:49:16 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_disp:pptp_ctrl.c:953]: send_accm is FFFFFFFF, recv_accm is FFFFFFFF
Sep 17 00:49:16 sergmasters pptp[1622]: nm-pptp-service-1588 warn[ctrlp_disp:pptp_ctrl.c:956]: Non-zero Async Control Character Maps are not supported!
Sep 17 00:49:16 sergmasters pppd[1594]: Connection terminated.
Sep 17 00:49:16 sergmasters NetworkManager[705]: <warn> VPN plugin failed: 1
Sep 17 00:49:16 sergmasters avahi-daemon[707]: Withdrawing workstation service for ppp1.
Sep 17 00:49:16 sergmasters NetworkManager[705]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp1, iface: ppp1)
Sep 17 00:49:16 sergmasters pptp[1599]: nm-pptp-service-1588 warn[decaps_hdlc:pptp_gre.c:204]: short read (-1): Input/output error
Sep 17 00:49:16 sergmasters pptp[1599]: nm-pptp-service-1588 warn[decaps_hdlc:pptp_gre.c:216]: pppd may have shutdown, see pppd log
Sep 17 00:49:16 sergmasters pppd[1594]: Exit.
Sep 17 00:49:16 sergmasters NetworkManager[705]: <warn> VPN plugin failed: 1
Sep 17 00:49:16 sergmasters NetworkManager[705]: <info> VPN plugin state changed: 6
Sep 17 00:49:16 sergmasters NetworkManager[705]: <info> VPN plugin state change reason: 0
Sep 17 00:49:16 sergmasters pptp[1622]: nm-pptp-service-1588 log[callmgr_main:pptp_callmgr.c:234]: Closing connection (unhandled)
Sep 17 00:49:16 sergmasters pptp[1622]: nm-pptp-service-1588 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Sep 17 00:49:16 sergmasters pptp[1622]: nm-pptp-service-1588 log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
Sep 17 00:49:16 sergmasters NetworkManager[705]: <warn> error disconnecting VPN: Could not process the request because no VPN connection was active.
Sep 17 00:49:16 sergmasters NetworkManager[705]: <info> Policy set 'Megafon connection' (ppp0) as default for IPv4 routing and DNS.
Sep 17 00:49:20 sergmasters ntpdate[1621]: adjust time server 91.189.94.4 offset -0.334176 sec
Sep 17 00:49:21 sergmasters NetworkManager[705]: <info> VPN service 'pptp' disappeared