copy EDNS options to resolver response

2022-02-19 Thread Brian J. Murrell
I have a BIND9 server configured as a resolver for the local network to
forward all requests to 1.1.1.1.  Given that that 1.1.1.1 includes
(RFC8914) EDE EDNS options in it's responses, can I configure the BIND
resolver to forward those EDNS options in it's response to the client?

While I know BIND9 doesn't yet do EDE itself, I am hoping for an option
in BIND to just blindly copy whatever EDNS options it receives to it's
client.

Cheers,
b.



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Re: copy EDNS options to resolver response

2022-02-19 Thread Matus UHLAR - fantomas

On 19.02.22 12:31, Brian J. Murrell wrote:

I have a BIND9 server configured as a resolver for the local network to
forward all requests to 1.1.1.1.


what's the point of this setup?
BIND can resolve by itself perfectly and you wouldn't rely on 3rd party 
service



 Given that that 1.1.1.1 includes
(RFC8914) EDE EDNS options in it's responses, can I configure the BIND
resolver to forward those EDNS options in it's response to the client?


bind uses edns by default unless you turn it off. Or unless your firewall 
blocks it, in which case you can't enable it.



While I know BIND9 doesn't yet do EDE itself, I am hoping for an option
in BIND to just blindly copy whatever EDNS options it receives to it's
client.


no, bind uses edns as it needs, not as client asks it to. communication with 
clients is independent from communication with servers

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Re: copy EDNS options to resolver response

2022-02-19 Thread Brian J. Murrell
On Sat, 2022-02-19 at 19:02 +0100, Matus UHLAR - fantomas wrote:
> 
> what's the point of this setup?
> BIND can resolve by itself perfectly and you wouldn't rely on 3rd
> party 
> service

Except that it cannot do EDE, as I already said in my original message.


Cheers,
b.




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Re: copy EDNS options to resolver response

2022-02-19 Thread Mark Andrews

EDNS is hop by hop. There is no copying by any compliant server. 
-- 
Mark Andrews

> On 20 Feb 2022, at 06:32, Brian J. Murrell  wrote:
> On Sat, 2022-02-19 at 19:02 +0100, Matus UHLAR - fantomas wrote:
>> 
>> what's the point of this setup?
>> BIND can resolve by itself perfectly and you wouldn't rely on 3rd
>> party 
>> service
> 
> Except that it cannot do EDE, as I already said in my original message.
> 
> 
> Cheers,
> b.
> 
> 
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> this list
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> ISC funds the development of this software with paid support subscriptions. 
> Contact us at https://www.isc.org/contact/ for more information.
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> 
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Re: copy EDNS options to resolver response

2022-02-19 Thread Brian J. Murrell
On Sun, 2022-02-20 at 08:16 +1100, Mark Andrews wrote:
> 
> EDNS is hop by hop. There is no copying by any compliant server. 

Fair enough.  I thought it was a long shot.

Cheers,
b.

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