In message <[email protected]>, Ray Bellis writes: > > On 8 Nov 2012, at 12:59, Nicholas Weaver <[email protected]> > wrote: > > > > > How do recursive resolvers react to unknown EDNS0 options? > > > > Are the requests simply dropped? > > Is the unknown option removed and ignored? > > Passed to the authority unchanged? > > They certainly shouldn't do the latter - EDNS is supposed to be "hop by > hop", not "end to end". > > RFC 2671 appears silent on drop vs ignore. 2671bis explicitly says > "ignore".
And it wouldn't be drop in any case. It would be NOTIMP/FORMERR vs ignore. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: [email protected] _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
