The following my .ovpn file with parts of identifying information obfuscated with "blah". I've been trying to connect using Ubuntu 16.04.

dev tun
proto udp
remote blah.blah.com
port 52424
resolv-retry infinite
remote-cert-tls server
tls-version-min 1.2
verify-x509-name server_blahblahblah name
cipher AES-256-CBC
auth SHA256
compress lz4
verb 3
-----BEGIN OpenVPN Static key V1-----
-----END OpenVPN Static key V1-----

When I try to import this with sudo nmcli connection import type openvpn file blah.ovpn I get the following.

Error: failed to import 'blah.ovpn': configuration error: unsupported blob/xml element (line 92).

Line 92 is where you see <tls-crypt>.

When I try sudo openvpn --config blah.ovpn I get the following.

Options error: Unrecognized option or missing parameter(s) in blah.ovpn:15: compress (2.3.10)

Line 15 is compress lz4. When I comment this out and try again, I get the following.

Options error: Unrecognized option or missing parameter(s) in blah.ovpn:20: tls-crypt (2.3.10)

Line 20 is just in two lines after -----BEGIN CERTIFICATE----- in the <ca> tag, which seems odd.

I've looked online and while I've seen similar errors I've not seen anyone having these exact problems that I have.

I created the .ovpn file on my Raspberry PI using pivpn. The generated files work smoothly on both my Windows machine, and my Android device, just not Ubuntu.

Any ideas?

  • i am having this issue too. did you manage to resolve this issue? – X0r0N Jun 6 '18 at 20:31
  • After I upgraded to Ubuntu 18.04, the GUI was still useless, however suddenly running sudo openvpn --config blah.ovpn worked from the command line. I'm guessing it was an updated version of OpenVPN. – Geesh_SO Jun 10 '18 at 11:55

The --compress error is because Ubuntu uses OpenVPN 2.3.10, and 2.3.10 doesn't know about that directive.
--compress was added in 2.4.x.

In 2.3.x, LZO compression was the only compression method supported, via the --comp-lzo directive.
See https://community.openvpn.net/openvpn/wiki/OpenvpnSoftwareRepos for info on adding the official OpenVPN repo so you can upgrade to the latest stable version (2.4.6 at the time this was posted).

--tls-crypt was also added in 2.4.x, so you would need to upgrade OpenVPN in order to use that as well.

However, Network Manager's OpenVPN plugin hasn't added support for --compress yet.
According to https://gitlab.gnome.org/GNOME/NetworkManager-openvpn/issues/1, --compress is still an open issue. This does say that --tls-crypt was added in NM 1.2.10, but Ubuntu uses NM 1.2.6.

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