I have just checked the `/val/log/syslog` ( see also comment #8 ) and I have noticed that when the issue start I got this messages:
pppd[8268]: Protocol-Reject for unsupported protocol 'IP6 Header Compression' (0x4f) pppd[8268]: Protocol-Reject for unsupported protocol 0x1c18 pppd[8268]: Protocol-Reject for unsupported protocol 0xb9 pppd[8268]: Protocol-Reject for unsupported protocol 'RTP IPHC Full Header' (0x61) pppd[8268]: Protocol-Reject for unsupported protocol 'KNX Bridging Control Protocol' (0x8051) pppd[8268]: Protocol-Reject for unsupported protocol 'DECnet Phase IV' (0x27) A lot of them ( 3 every second ) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/290178 Title: pptp vpn connection drops out To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-pptp/+bug/290178/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
