After installing Ubuntu 22.04 stable in WSL, I proceeded to install Docker Engine using the official Docker instructions. Since this is WSL, running sudo systemctl start docker does not work. To start the docker service, you'll need to use sudo /etc/init.d/docker start.
You will notice that the docker service is not running if you check using sudo /etc/init.d/docker status. The reason is because of this error in starting docker.
To fix this, you will need to update your default iptables to the legacy option. After doing this, you should be able to start the docker service and run the normal docker commands.
$ sudo update-alternatives --config iptables
There are 2 choices for the alternative iptables (providing /usr/sbin/iptables).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/sbin/iptables-nft 20 auto mode
1 /usr/sbin/iptables-legacy 10 manual mode
2 /usr/sbin/iptables-nft 20 manual mode
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