In T4249#118633, @Viacheslav wrote:

You can get access to host netwoks with set container name foo allow-host-networks

To reproduce the bug, we need to add a source nat rule first.

configure
set nat source rule 100 outbound-interface 'eth0'
set nat source rule 100 source address '192.168.0.0/24'
set nat source rule 100 translation address masquerade
commit
save
exit

Then if we try to list the nat tables with iptables iptables -t nat -L, we will get error like table 'nat' is incompatible, use 'nft' tool.
Next, if we use podman to create a container sudo podman run -d ubuntu:latest, podman will return the error because it will look up nat rules with iptables.