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.
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.