[getdns-api] EDNS extended rcode {Sender Address Possibly Forged}

Ray Bellis Ray.Bellis at nominet.org.uk
Tue Nov 26 08:13:36 MST 2013

On 26 Nov 2013, at 15:10, Mankin, Allison <amankin at verisign.com<mailto:amankin at verisign.com>> wrote:

The IANA DNS parameters  for this appear to have an error then too:

65001-65534     Reserved for Local/Experimental Use             [RFC6891<http://www.iana.org/go/rfc6891>]
65535   Reserved for future expansion           [RFC6891<http://www.iana.org/go/rfc6891>]

The values above 4095 come from TSIG and TKEY that both support a 16-bit extended RCODE field.  See §2.3 of RFC 6891.

However those values cannot be encoded in an EDNS OPT RR.


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