Hi Paul

On Mon, Dec 08, 2014 at 10:08:16PM -0800, Paul Vixie wrote:
> let's find out:
> 
> http://ietfreport.isoc.org/idref/draft-vixie-dnsext-edns2/

This draft mentions this feature as TCP only. The use case I was
thinking of was in getting DNS messages over UDP through, not larger
than 1<<16 message sizes. Because there is no sequence in UDP, it'd also
need the index and count in every segment/fragment.

I didn't mention label sequence compression in the prior message. In the
case of fragments over UDP, message compression would occur as before
(RFC 1035) where OFFSET is valid within a datagram (fragment).  As
offsets do not cross datagram boundaries, this would aid simple
implemementation.

                Mukund

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