>in the event where a delegation response is going to be truncated, it
>is desireable that glue of the appropriate type be added preferentially.
>if the query arrived by IPv4, then A RRs ought to be added first; if
>the query arrived by IPv6, then AAAA RRs ought to be added first.
>
>this assumes that a dns client will wish to use the same protocol for
>reaching the designated servers as it used to reach the delegating
>server.

        can't we provide like "one A glue, then one AAAA glue, then A glue,
        then one AAAA glue ..." ?  this way dual stack querier would be able
        to get n A glue records and m AAAA glue records after truncation.

itojun
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