It goes further. If the desktop/laptop only has IPv6 (no IPv4 connectivity) nm-openvpn tries to connect to the IPv4 host and fails, disregardless, that an AAAA record is available and reachable.
Essentially, nm-openvpn does not allow for tcp6-client or udp6-client to be configured or to be autoselected. If IPv6 connectivity is available and an AAAA record for the OpenVPN Server is in place, tcp6-client or udp6-client should be tried/initiated first with fallback to tcp-client /udp-client. If no IPv6 connectivity is available, then trying tcp6-client/udp6-client is not needed. If no IPv4 connectivity is available, then trying tcp-client/udp-client is not needed. It has either to be autoguessed (like the Android OpenVPN app does) or be configurable. As it is now, nm-openvpn does neither. ii network-manager 1.2.2-0ubuntu0.16.04.3 i386 network management framework (daemon and userspace tools) ii network-manager-gnome 1.2.0-0ubuntu0.16.04.4 i386 network management framework (GNOME frontend) ii network-manager-openvpn 1.1.93-1ubuntu1 i386 network management framework (OpenVPN plugin core) ii network-manager-openvpn-gnome 1.1.93-1ubuntu1 i386 network management framework (OpenVPN plugin GNOME GUI) DISTRIB_ID=Ubuntu DISTRIB_RELEASE=16.04 DISTRIB_CODENAME=xenial DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1508064 Title: nm-openvpn IPV6 problem with AAAA only record To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-openvpn/+bug/1508064/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs