[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[public-dns-discuss] Re: Understanding Google Public DNS Responses



These are standard DNS request/response flags as defined in RFC 1035 section 4.1.1 and extended (with AD and CD) in RFC 2535 section 6.1 (the meaning of AD was updated in RFC 3655 and RFC 4035).

From https://developers.google.com/speed/public-dns/docs/dns-over-https

  "Status": 2,  // SERVFAIL - Standard DNS response code (32 bit integer).
 
"TC": false,  // Whether the response is truncated
 
"RD": true,   // Always true for Google Public DNS
 
"RA": true,   // Always true for Google Public DNS
 
"AD": false,  // Whether all response data was validated with DNSSEC
 
"CD": false,  // Whether the client asked to disable DNSSEC


The RD (recursion desired) and RA (recursion available) flags aren't really relevant for DNS-over-HTTPS, but are included for completeness.

The comments above are not part of actual responses (JSON has no comment syntax in any case) but were added as explanatory text.

Do you think you would have noticed a separate section explaining these flags more readily than this example which you didn't?

@alex

--
You received this message because you are subscribed to the Google Groups "public-dns-discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to public-dns-discuss+unsubscribe AT googlegroups.com.
To post to this group, send email to public-dns-discuss AT googlegroups.com.
Visit this group at https://groups.google.com/group/public-dns-discuss.
To view this discussion on the web visit https://groups.google.com/d/msgid/public-dns-discuss/82584d02-abec-4009-80dc-83ff7a7cf18a%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.