ietf-dkim
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Re: [ietf-dkim] Requirements clarification: Standard for resource record name space collision

2006-08-09 11:26:23
At 1:02 PM -0400 8/9/06, Scott Kitterman wrote:
***************
*** 474,480 ****
            expectation is "few".]

     3.  Discovery mechanism MUST NOT overload semantics of existing DNS
!        resource records where name space collisions are possible.

  5.2.  Transport requirements

--- 479,485 ----
            expectation is "few".]

     3.  Discovery mechanism MUST NOT overload semantics of existing DNS
!        resource records where name space collisions are reasonably likely.

  5.2.  Transport requirements

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Making name space collision impossible (the written requirement) is a high
bar.  Higher than was used for DKIM base.  Reasonably likely seems like a
better standard.  Impossible would seem to require a new RR.

Actually, that's not true. For -base, there was no chance that a host name (as compared to a domain name) would collide with a name that had the chosen label. I think saying "impossible" is reasonable if you clarify the difference. It would be really nice not to revisit the wars that erupted when the IDN WG picked a label prefix.
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