June 2018
Intermediate to advanced
368 pages
11h 1m
English
Content preview from Managing Mission - Critical Domains and DNS
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Things to know
The ANY qtype has special importance to powerdns.
Assume that the ANY qtype is used internally on essentially every inbound query. That is, when PowerDNS receives a query from the outside world, when it relays that query to a given backend, the qtype the backend sees is almost always ANY.
The backend will process the ANY query and send back all relevant records. It is at that point that the PowerDNS core engine will extract the records, matching the initial inbound qtype and return those records to the querying resolver.
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