Is there a way to turn off EDNS Responses from Server globally for all the endpoints

Mark Andrews marka at isc.org
Thu Sep 29 07:09:05 UTC 2016


In message <PN1PR01MB027011427CD52EA0E9B0720881CE0 at PN1PR01MB0270.INDPRD01.PROD.OUTLOOK.COM>, Harshith Mulky writes:
> Before anybody asks, why would I need to turn off EDNS, this is to verify
> the client falling back to TCP in case EDNS is not supported on server,
> and the server has to send response > 512 bytes, and the client falls
> back to TCP and queries the server

If you just want smaller responses "max-udp-size 512;".

> Appreciate any help
> 
> Thanks in advance
> Harshith
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org


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