[dns-operations] Missing DoE NSEC RRs for .xn--ogbpf8fl from sy.cctld.authdns.ripe.net[193.0.9.113]

[Stephane Bortzmeyer]

On Mon, Jul 23, 2018 at 09:58:00AM -0400,
 Viktor Dukhovni <ietf-dane at dukhovni.org> wrote 
 a message of 14 lines which said:

> The response from sy.cctld.authdns.ripe.net[193.0.9.113]
> lacks the requisite NSEC records:

It probably depends on the anycast instance. From $WORK, I get NSEC
over IPv6 (ns1.gb-lon.authdns.ripe.net) but not over IPv4
(ns2.gb-lon.authdns.ripe.net).