[dns-operations] EDNS response only with DO=1

[P Vixie]

They probably want to avoid fragmentation pain except where dnssec is involved.

On September 28, 2016 5:18:14 AM GMT+02:00, Mark Andrews <marka at isc.org> wrote:
>
>Can someone please explain the logic in building a DNS server that
>supports EDNS but only returning a EDNS response if DO=1?
>
>Mark
>
>-- 
>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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