[dns-operations] DNSSEC algorithm deployment trends update...

[Viktor Dukhovni]

Following up on my post from ~two months ago:

> On Oct 9, 2020, at 5:39 AM, Viktor Dukhovni <ietf-dane at dukhovni.org> wrote:
> 
> By far the largest remaining cluster (>300k) of algorithm 5
> zones were under .com.br and these should all be upgraded
> to algorithm 13 over the coming ~10 days.  Thus the algorithm
> 5 graph is showing that count falling dramatically.

That process was completed as expected, and algorithm 5 deployment
though no longer falling appreciably is now essentially negligible.
Under 30k domains total out of ~13.3 million.

> The algorithm 7 downward trend is less dramatic, but by now
> clearly established as unlikely to be a fluke.

This has continued apace, with ~12k fewer algorithm domains
each month since the peak in August 2019. At this pace it
would however take ~15 years for algorithm 7 to be phased out,
so it would be nice to see a more dramatic pace of migration to
8 or 13.

Below are graphs for 7, and 8 + 13:

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Presently 13 (ECDSA P256) is both the single most numerous and fastest
growing DNSSEC algorithm.

-- 
	Viktor.