Sending extra info in bind dns query packet

Matus UHLAR - fantomas uhlar at
Fri Jul 15 10:00:47 UTC 2016

On 14.07.16 11:19, Sachin Patil wrote:
>I am just looking into bind and want to send extra information while
>querying dns bind server.
>This information will be used at the bind server side to return the
>resolved ip.

Do you mean something like proposed "edns client subnet" that may return
different server IP address based on the client's IP?

I'm afraid it's not supported by BIND yet.

>I have control of dns query and bind server, I mean I can modify the source
>codes of both.
>Can I use additional section of dns protocol to send my extra information
>in dns query packet?
>Is there other way I can send this extra info through the bind dns query

it's highly dependent on what exactly you want to achieve.

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