[Bug 1578193] Re: cannot load legacy-only plugin

[Vaclav Rehak]

@raharper I installed the packages from your PPA on 16.04 and I can
confirm that "IPSEC/IKEv2 (strongswan)" option is now present in nm-
applet.

But I'm not sure how can I configure L2TP VPN like this http://freel2tpvpn.com/
This VPN (as well as our company one I need to use) has short secret but the nm-applet enforces that pre-shared secret must be at least 20 characters long. Where does this requirement come from?

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Title:
  cannot load legacy-only plugin

Status in network-manager-strongswan package in Ubuntu:
  Confirmed

Bug description:
  Strongswan isn't presented as an option when I want to add a VPN in
  NetworkManager (GUI), despite the fact that the latest network-
  manager-strongswan (1.3.1-1ubuntu1) is installed.

  From /var/log/syslog:

  May  4 13:42:16 workmate gnome-session[1833]: ** Message: vpn:
  (strongswan,/etc/NetworkManager/VPN/nm-strongswan-service.name) cannot
  load legacy-only plugin

  $ dpkg-query --status network-manager-strongswan | grep ^Version
  Version: 1.3.1-1ubuntu1

  $ dpkg-query --status network-manager | grep ^Version
  Version: 1.1.93-0ubuntu4

  $ lsb_release -rd
  Description:	Ubuntu 16.04 LTS
  Release:	16.04

  Could be related to #1570352, but since the error-message is
  different, I created a new bug report

  I found network-manager-openconnect had a same issue, upstream fixed
  this by porting the code to use libnm [1] and [2]

  [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817057
  [2] https://bugs.launchpad.net/ubuntu/+source/network-manager-openconnect/+bug/1571300/comments/6

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