apport information

** Attachment added: "ProcEnviron.txt"
   
https://bugs.launchpad.net/bugs/1800542/+attachment/5206918/+files/ProcEnviron.txt

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https://bugs.launchpad.net/bugs/1800542

Title:
  OpenVPN connection not stable after upgrade to 18.10 (udp, ipv6)

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

Bug description:
  After upgrade to Ubuntu 18.10, my connection to my employer's VPN
  server has become unstable.

  The server provides both ipv4 and ipv6 endpoints.  Since I have global
  ipv6 at home, my client defaults to connecting over ipv6.

  The connection consistently drops after only a few minutes of being
  connected.

  If I force the connection to use ipv4 (by hard-coding the host
  resolution in /etc/hosts), the connection is stable.

  If I use ipv6 and force proto-tcp=yes, the connection is stable.

  If I use the default ipv6 and udp, the connection is not stable.

  Using tcp for VPNs is suboptimal.  Hard-coding addresses in /etc/hosts
  is suboptimal.

  This may be a bug in openvpn rather than in network-manager-openvpn,
  but I'm starting here.

  It's possible there are pathMTU issues involved, but I reproduced this
  same problem when I was on a different network from my home network
  (though I did not confirm, when I had access to this other network,
  that it was ipv6-enabled).

  I will work on getting more details about both sides of the network to try to 
debug this.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.10
  InstallationDate: Installed on 2010-09-24 (2957 days ago)
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 
(20100816.1)
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  Package: network-manager-openvpn 1.8.6-1ubuntu1
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Tags:  cosmic
  Uname: Linux 4.18.0-10-generic x86_64
  UpgradeStatus: Upgraded to cosmic on 2018-10-18 (11 days ago)
  UserGroups: adm admin cdrom dialout docker libvirt libvirtd lpadmin lxd 
mythtv plugdev sambashare sbuild src sudo
  _MarkForUpload: True

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