Changing the Docker default subnet

By default Docker creates networks in the 172.17.0.1/16 range. However, we at ISW use that subnet for all our traffic. So we need to change this.

You can do this by editing the file /etc/docker/daemon.json and adding the following:

{
    "bip": "192.168.200.1/18"
}

This will change it from 172.17.0.1/16 to 192.168.200.1/18. Now restart docker you typing ip a should show you that the docker0 interface address has changed. Note: you might need to recreate your networks for them to change as well.