On 8/25/16, 17:56, "DNSOP on behalf of Mark Andrews" <dnsop-boun...@ietf.org on behalf of ma...@isc.org> wrote:
> If you don't want to implement a EDNS than don't implement it. If
you don't want to use a EDNS option with some client then just
ignore the option. Similarly for EDNS flags. The client is expecting
that unsupported options and flags will be ignored not used to
decide to drop a query.
If this is your intended message, stick to that in the draft. I.e., don't go
beyond the message by requiring responses to queries, reinforce how to respond
if the server isn't implementing EDNS0. Don't direct operators to perform
maintenance checks, that has little to do with properly implementing the EDNS
mechanism, stick with making sure implementers know what to code up. Maybe
this is "clarifications on EDNS response behavior" and not "no response issue".
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