Ubuntu
openvpn-dco-dkms package

  1. Bug #2012915
  2. Comment #1

Comment 1 for bug 2012915

Revision history for this message
Derrick Stanley (xeon64) wrote (last edit ):

I'm also having issues with DCO not working with the latest "normal" non-LTS Ubuntu release. All previous releases prior to Ubuntu Server 24.xx noble seemed to work fine.. this new kernel 6.8.0-31-generic does not work with the current version of DCO 0.0+git20231103-1. I have to uninstall the openvpn dco dkms module for a client to be able to connect if not it just hangs.. For some reason it can't create a tun0 device when the module is loaded. I tried compiling the latest version from github but that didn't work.. it resulted in the same issue... I'm going to see if I can rollback the kernel and see if that works.. I see no reason why it shouldn't work after doing a rollback to manic minotaur kernel + dco version.

This is the dmesg error I get..

ubuntu kernel: ovpn: cannot retrieve device in ovpn_netlink_dump_peers: -19

I've changed nothing with my routine setup.. so I'm assuming it's a issue with the new kernel.

UPDATE: rolling back to kernel 6.5 seemed to work.. no errors.. haven't tested if DCO is really working as far as speed.