Lxd bridge doesn't work with IPv4 and UFW with nftables

Yeah, I’m honestly not sure what’s the right thing to do here…

I’m not super optimistic about us putting workarounds in place to handle the compatibility xtables tooling. By definition this will cause issues as it’s trying to pretend that nft is xtables and so comes with the same issues around rule ordering…

I believe ufw was natively ported to nft recently so it may instead be better to see how we handle the rules generated by that version.

Cooperating properly with other native nft users and pushing distros to ship the native nft support in those tools when available feels like a more future proof way to handle this.

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