netfilter rules not created on clearlinux

[engel75]

Describe the bug
I was able to build wireguard-ui on a ubuntu 18.04 system using buildah. But I would like to use clealinux to run it. Clearlinux got all kernel modules included and uses netfilter. But it looks like wireguard.ui does not create any netfilter rules.

To Reproduce
Steps to reproduce the behavior:

1. Copy go binary to any clealinux VM (amd64)
2. Start binary like ./wireguard-ui --listen-address=":80" --wg-endpoint="wireguard.xxxxxxx.xxx:51820" --nat-device="ens3" --data-dir="/srv" --log-level=debug
3. check netfilter with nft tables list
4. ping from client to any network on ens3 is not working

Expected behavior
There should be netfilter rules enabling NAT and MASQUARADE.

Screenshots

Device:

Additional context

[suom1]

This is not a bug, as netfilter and nftables are different things.
Could be a good feature to add support for netfilter also.