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Enhance DNS Lookup Section – Recursive vs. Iterative Queries #2502

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Enhance DNS Lookup Section – Recursive vs. Iterative Queries #2502

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6 changes: 6 additions & 0 deletions README.rst
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Expand Up @@ -223,6 +223,12 @@ DNS lookup
``ARP process`` below for the DNS server.
* If the DNS server is on a different subnet, the network library follows
the ``ARP process`` below for the default gateway IP.
* If the configured DNS server (e.g., ISP’s caching DNS) does not have the record,
it performs a recursive or iterative query.
* In a recursive query, the resolver contacts other DNS servers on behalf of the
client until it finds the answer.
* In an iterative query, the resolver returns a referral to another DNS server
that might have the answer, and the client follows up with additional queries.


ARP process
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