New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/37611#issuecomment-1209432160

Comment:
Yeah, nftabls seems to be easier to work with. I think we can make nftables as default.

Anyway, can you patch the `waydroid-net.sh` to source some configuration from let's say `/etc/waydroid/net.conf` to choose firewall setting. `/usr` is meant to be readonly.