Hi
Any dns-admin from "admin.ch" resp. "ins[123].admin.ch" here? The server "ins3.admin.ch" does not resolve over ipv6:
# get the v6-address $ dig +short @127.0.0.1 aaaa ins3.admin.ch 2a00:c38:2:28:0:ffff:d467:4855
# query the v6-address for the soa record of "admin.ch" $ dig @2a00:c38:2:28:0:ffff:d467:4855 soa admin.ch
; <<>> DiG 9.16.2 <<>> @2a00:c38:2:28:0:ffff:d467:4855 soa admin.ch ; (1 server found) ;; global options: +cmd ;; connection timed out; no servers could be reached
The same result on dnsviz.net: https://dnsviz.net/d/admin.ch/XqLpPw/dnssec/
Kind regards, Tom