IPv6 Support in the OpenVPN Server Auto Setup Script Project

The OpenVPN Server Auto Setup Script project does not have official IPv6 support, but it can be achieved in a makeshift way through the process below:

Edit the OpenVPN configuration:

sudo nano /etc/openvpn/server/server.conf

Add after the push "dhcp-option DNS" lines: (In this case, I used Google’s IPv6 DNS):

push "dhcp-option DNS6 2001:4860:4860::8888"
push "dhcp-option DNS6 2001:4860:4860::8844"

Restart the service:

sudo systemctl restart openvpn-server@server.service

To test, access:

• test-ipv6.com - To run probes
• ipv6.tlund.se - IPv6 only
• ipv6c.tlund.se - IPv6 only, via a CNAME
• ipv6-only.tlund.se - IPv6 only, also requires resolver to be IPv6 enabled
• ipv6-onlyc.tlund.se - IPv6 only, via a CNAME, also requires resolver to be IPv6 enabled
• [2001:67c:1898:11::46] - IPv6 literal

Source:

• github.com