Bob Harold writes: > I am a little concerned about yet another option that the client > might want to send with every query. Can the existence of *any* > EDNS option from the client be taken to mean that EDNS options are > understood in general, and the resolver is ok to respond with this > ENDS option, which the client might not understand but will not choke on?
I personally am of the belief that yes, if the request has an OPT then a responder can include an option code that was not in the request. At least I don't see anything in 6891 to prohibit it. This is behaviour that draft-ietf-dnsop-extended-error is also expecting. _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
