OVPN supports IPv4 and IPv6 on all our VPN servers. IPv6 is enabled by default on all created user accounts for security purposes. Do note that certain devices do not have support for IPv6 which means that your connection may fail with IPv6 activated on your account.
When connecting to any of our servers, you'll be assigned a NAT'd IPv4 address and a public IPv6 address.
It's possible to disable IPv6 on your settings page as well as in the desktop client.