[dns-operations] question on query to DNS server's IPv6 interface

Vladimír Čunát vladimir.cunat+ietf at nic.cz
Tue Mar 31 12:43:05 UTC 2020


On 3/31/20 6:29 AM, Tessa Plum wrote:
> When making a DNS query (giving the type is A) to an authorized
> nameserver to its IPv6 address, will the value in answer are also IPv6
> addresses? If the host doesn't have an IPv6 address, how will DNS
> server return? 

No, A always means IPv4 address.  Even if you ask over whatever
transport.  AAAA is for the IPv6 equivalent.

--Vladimir



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