This past year, I've taken a special interest in IPv6. I love that NAT isn't needed. I love that I can have all the static IPs I want. I love testing out what works and what doesn't. I had some spare time today to spend on hobbyist stuff, so I decided to try to get my FreeBSD machine running IPv6. The network the FreeBSD machine is on only supports IPv4. I have a VPS that runs OpenVPN. I'll show how to use Hurricane Electric's 6in4 tunnel to get your FreeBSD machine hooked up with IPv6 along with any jails. Of course, this article assumes you're using vnet (using epair devices). My jail administration Drupal module supports this configuration out-of-the-box. Continue reading to learn how to do it by hand and to see screenshots of my Drupal module in action.

Current IPv6 tunnel brokers carry requirements that you might not be able to meet on the network you're using. For example, if you're using a public, open wireless network which you don't control and you want to create a 6in4 tunnel to he.net, you're met with difficulties. If ICMP is disabled on the WAN port of the network, you won't be able to connect. I've come up with a solution: use OpenVPN to tunnel your 6in4 tunnel. This article describes how to use OpenVPN 2.2 (which doesn't have IPv6 support in the tun device) to create a secure tunnel to enable IPv6 on a remote wireless network.