Docker

Docker packages and runs applications in isolated containers.

iptables nat table error

If dockerd fails to start with an error like:

failed to start daemon: Error initializing network controller: ... failed to register "bridge" driver: failed to create NAT chain DOCKER: iptables failed
iptables v1.8.11 (legacy): can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

and sudo iptables -t nat -L reports:

modprobe: FATAL: Module ip_tables not found in directory /lib/modules/<kernel>
iptables v1.8.11 (legacy): can't initialize iptables table `nat': Table does not exist (do you need to insmod?)

If CachyOS is the distro, install iptables-nft. You probably dont want this on your host machine.

Source

docker.com