Access Server: DCO Not Working After Upgrading to 3.2.0

Overview

Starting with Access Server 3.2.0, Data Channel Offload (DCO) requires a new kernel module package.

If you upgrade Access Server using the official installation script, the required DCO package installs automatically.

If you upgrade Access Server using a package manager such as apt, yum, or dnf, Access Server may upgrade successfully, but the required DCO package may not install automatically. As a result, DCO doesn't function correctly, and you may see a message similar to the following:

ovpn-dco availability: False, Kernel module not loaded

Resolution

Install the required DCO package for your operating system.

Option 1: Run the Access Server installation script (recommended)

Run the Access Server installation script to install any missing DCO packages automatically:

bash <(curl -fsS https://packages.openvpn.net/as/install.sh) --yes

Option 2: Install the DCO package manually

Ubuntu, Debian, and compatible distributions:

apt update && apt -y install ovpn-dkms

Red Hat Enterprise Linux and compatible distributions:

yum -y install kmod-ovpn

Need help?

If the issue persists, submit a support ticket.