Comment # 4 on bug 1226766 from Anchal Nigam

`nft list ruleset ip` returns nothing.

```
desk:/ # nft list ruleset ip
desk:/ # 
```

Should I still try setting `firewall_backend = "iptables"`? The way I read it,
it sounded like I would only do that if I have iptables-nft or nft rules. 

I don't fully understand what any of this means.