docker openvpn dual stack (4to6, 6to4, ipv6 nat support)

What

I have some machines under three types of network environment.

• Home: broadband with an ipv4 private address and an ipv6 (public) address
• Office: only ipv4 private address
• Cloud: both ipv4 public address and ipv6 (public) address

How can I access home from office?

We can deploy an openvpn server on cloud machine as a jumper.

How To

1. clone source code

git clone https://github.com/ssst0n3/docker-openvpn-dual.git
cd docker-openvpn-dual

2. setup openvpn

docker build -t openvpn .
docker run --rm -v openvpn-ipv6-data:/etc/openvpn openvpn setup

3. run openvpn server

docker run --net host --privileged -tid -v openvpn-ipv6-data:/etc/openvpn --name openvpn --restart always openvpn run

4. generate client config

CLIENTNAME=clientname
SERVER_ADDRESS=1.1.1.1
PASS=password
docker run --rm -v openvpn-ipv6-data:/etc/openvpn openvpn client $CLIENTNAME $SERVER_ADDRESS $PASS> $CLIENTNAME.ovpn

---

tested on

• aliyun ecs with ipv6-gateway

Reference

• Inspired from kylemanna/docker-openvpn. But the ipv6 support of that project does not work for me.