Uselessness at Ubuntu 20.04

[stefanx]

Hello,

firehol doesn't work at Ubuntu 20.04:

>  firehol try
 WARNING: error initializing iptables: IPv4 disabled
 WARNING: error initializing ip6tables: IPv6 disabled
 ERROR: Neither IPv4 nor IPv6 is available - exiting

There is allready a bug description:
https://bugs.launchpad.net/ubuntu/+source/firehol/+bug/1891751

Please help (I think Ubuntu 20.04 is not that unimportant)

Thanks und best Regards

Stefan