vpn under lubuntu-16.04
VPN cannot established anymore under lubuntu-16.04.
From GUI (network-manager):
-> network connections ->vpn -> strongswan -> "bearbeiten" -> error: "vpn - extension service (Erweiterungsdienst) for org.freedesktop.networkmanager.strongswan could not be found".
So far, the behavior appears to be the same as was reported in bug #1406.
However, other than in #1406, vpn can also NOT be established via "sudo ipsec restart" and "sudo ipsec up ...".
Thus at present a vpn connection cannot be established at all!
Strongswan version is 5.3.5-1ubuntu3. Network-manager version is 1.2.2ubuntu016.04.3; replacing it by the older version 1.1.93 has no effect.
Last successful setup of VPN for the present configuration: 4 weeks ago.