Updating connection failed nm ifupdown

But I can't get it to work with the built-in VPN client.elementary OS starts to connect and after a few seconds just shows a popup with message "The VPN connection '...' failed". The log in file /var/log/syslog says: VPN connection 'XXXXX' (Connect) reply received.Since Ubuntu 15.04, the init daemon system was fully changed to systemd, this includes the latest LTS release, Ubuntu 16.04.

Aug 3 vmelementary pppd[8428]: pppd 2.4.5 started by root, uid 0 Aug 3 vmelementary pppd[8428]: Using interface ppp0 Aug 3 vmelementary pppd[8428]: Connect: ppp0 /dev/pts/2 Aug 3 vmelementary Network Manager[773]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Aug 3 vmelementary Network Manager[773]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.

Aug 3 vmelementary Network Manager[773]: /sys/devices/virtual/net/ppp0: couldn't determine device driver; ignoring... XXX Aug 3 vmelementary pptp[8432]: nm-pptp-service-8424 fatal[open_callmgr:pptp.c:487]: Call manager exited with error 256 Aug 3 vmelementary pppd[8428]: Modem hangup Aug 3 vmelementary pppd[8428]: Connection terminated.

My default/network gateway is as shown below on the first line.

A subnet is used to divide a network into logical groups – subnetworks.

My /etc/network/interfaces file (on every distro I’ve tried so far) was pretty much empty by default (as below), if you have something more you should be careful with removing entries, start by commenting out lines (using #) to see exactly what you are using.