On Mon, 16 May 2005, Michael Tokarev wrote:
They're returning FORMERR (which is wrong), *and* don't return the original query (numqd=0).
As others have already pointed out, the behavior of the com/net authoritative name servers with regard to EDNS0 is correct according to RFC 2671 (the EDNS0 spec). In particular, please see section 5.3: 5.3. Responders who do not understand these protocol extensions are expected to send a response with RCODE NOTIMPL, FORMERR, or SERVFAIL. Therefore use of extensions should be "probed" such that a responder who isn't known to support them be allowed a retry with no extensions if it responds with such an RCODE. [...] Matt -- Matt Larson <mlarson@verisign.com> VeriSign Naming and Directory Services