[dnsext] downcasing of names in IPSECKEY and HIP?

Dear colleagues,

working from dnssec-bis-updates-16 section 5.1, and 6.2 of 4034, I gather that the rule for downcasing names in RDATA is not simply "downcase everything that is a name", but that the RRtypes listed have been selected for a reason. I am also under the impression that new RRtypes are excluded from the downcasing rules.

Now, types like IPSECKEY and HIP have appeared during , and their RFCs do not explicitly state whether the names appearing in their RDATA should be lowercased in their canonical form for DNSSEC. 

My questions:
- is the exclusion of newer types from these rules intentional? (I could think of a few reasons)
- shouldn't we expect RFCs/drafts for new RRtypes to be explicit about downcasing and perhaps other aspects of canonicalisation?

My apologies if answers to these questions are in the archives; I did a cursory search but did not find anything.

Kind regards,
Peter van Dijk

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