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Date:   Wed, 31 May 2023 13:28:16 +0200
From:   Florian Westphal <fw@strlen.de>
To:     Phil Sutter <phil@nwl.cc>, Pablo Neira Ayuso <pablo@netfilter.org>,
        netfilter-devel@vger.kernel.org, Florian Westphal <fw@strlen.de>,
        Eric Garver <e@erig.me>, danw@redhat.com, aauren@gmail.com
Subject: Re: [iptables PATCH 3/4] Add --compat option to *tables-nft and
 *-nft-restore commands
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References: <20230505183446.28822-1-phil@nwl.cc>
 <20230505183446.28822-4-phil@nwl.cc>
 <ZHaR1M+EFjUHLOc/@calendula>
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Phil Sutter <phil@nwl.cc> wrote:
> Then I revived my "rule bytecode for output" approach and got it working
> apart from lookup expression. But finally you axed it since it requires
> kernel adjustments.

Can you remind me what the problem with userdata is/was?
Brief summary will hopefully be enough ...

I agree text representation sucks due to two different formats, but what
about storing binary blob (xt format) of the rule in userdata?