How to change the Docker subnet?

Question

I am in a network that uses the IP range 172.17.42.1, unfortunately the same as Docker. Because of this I can no longer access my local network because the two networks conflict. Docker IP address can be changed?

Answer 1

This is a common problem and the solution is simple. First stop the Docker service:

sudo service docker stop

To see Nat routing information, run the command:

iptables -t nat -F POSTROUTING

Disconnect and remove the connection docker0:

ip link set dev docker0 down
ip addr del 172.17.42.1/16 dev docker0

Now add a new connection to docker0 and lift that connection:

ip addr add 192.168.10.1/24 dev docker0
ip link set dev docker0 up

Run the command below to view connection information docker0:

ip addr show docker0

Initialize the Docker service:

sudo service docker start

You will probably now be able to connect to your local network.

To view more information about your network, run the command below:

iptables -t nat -L -n