Hi, I think that a bit more should be said on the problem statement in the introduction.
I might have missed it, but what entity originates the query? Stub or resolver? You say that “ A caching recursive server receiving a Multiple QTYPE Option SHOULD attempt to fill its positive and negative caches with all of the specified RR types before returning its response to the client.” won’t this run the risk of delaying a response to the client? You say a server can “omit some (or all) of the records for the additional RR types” in the case of truncation. Given the previous quote, how should a caching recursive server behave in this case? Query again for the missing QTYPES or switch to TCP? I am also wondering how this interacts with https://tools.ietf.org/html/draft-wkumari-dnsop-multiple-responses-03? regards John John Dickinson http://sinodun.com Sinodun Internet Technologies Ltd. Magdalen Centre Oxford Science Park Robert Robinson Avenue Oxford OX4 4GA U.K.
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