Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: network-manager-openvpn (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2077864
Title:
`data-ciphers-fallback` impossible for openvpn connection
Status in network-manager-openvpn package in Ubuntu:
Confirmed
Bug description:
My TPlink router is not very configurable. I can connect to it using
`--data-ciphers-fallback AES-128-CBC`, but this seems to be impossible
to configure in the network manager.
This is similar to the bug here:
https://bugs.launchpad.net/ubuntu/+source/network-manager-openvpn/+bug/1993634
which states that --data-ciphers has been added upstream in debian
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1012664), yet there is no
mention of --data-ciphers-fallback.
If I try to manually edit the .yaml file in /etc/netplan/, by adding
the line `vpn.data-ciphers-fallback: "AES-128-CBC"` I get the
following error in /var/sys/syslog:
2024-08-26T11:27:38.979379+02:00 esperanza NetworkManager[1421097]:
<warn> [1724664458.9792]
vpn[0x5859c6179920,f01dbf90-536f-4b22-8d5a-13e26b34993f,"TPlink_config"]:
connect: failed to connect interactively:
'GDBus.Error:org.freedesktop.NetworkManager.VPN.Error.BadArguments:
property “data-ciphers-fallback” invalid or not supported'
Without that line, I get this error:
2024-08-26T11:15:31.909947+02:00 esperanza nm-openvpn[1416267]:
OPTIONS ERROR: failed to negotiate cipher with server. Configure
--data-ciphers-fallback if you want to connect to this server.
ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: network-manager-openvpn 1.10.2-3
ProcVersionSignature: Ubuntu 6.5.0-44.44-generic 6.5.13
Uname: Linux 6.5.0-44-generic x86_64
ApportVersion: 2.27.0-0ubuntu5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 26 11:18:45 2024
InstallationDate: Installed on 2021-10-12 (1049 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
SourcePackage: network-manager-openvpn
UpgradeStatus: No upgrade log present (probably fresh install)
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