Enabling edns on Bind 9.9

Ray Bellis ray at isc.org
Wed Jun 15 11:51:10 UTC 2016


On 15/06/2016 12:31, Harshith Mulky wrote:
> How can I enable EDNS on the bind server?
> 
> 
> Will just enabling this
> 
> edns-udp-size size_in_bytes ;
> 
> set the EDNS on the bind server?
> 
> 
> Or is EDNS Client specfic feature?

EDNS is always enabled on a BIND 9.9 server, but it's only permitted
(per the RFCs) if the client sent an OPT RR in the request.

Ray




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