There has been some discussion of late about DNS MTU sizing and EDNS0 
"fall-back".
I've found another "culprit" in the program DNSMASQ - distributed with 
FedoraCore 10
and later versions of RedHat.

to wit:

       -P, --edns-packet-max=<size>
              Specify the largest EDNS.0 UDP packet which is supported  by  the 
 DNS  for-
              warder.  Defaults to 1280, which is the RFC2671-recommended 
maximum for eth-
              ernet.

Is there any interest in revisting this RFC or should we be happy with a 
functional limit
on EDNS0 message size being 1280 bytes?

--bill
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