>If your device isn't able to reach 2606:4700:4700::1111, try using the DNS server 1.1.1.1

We run a public facing server, we aren't going to ask patients and external physicians to configure a DNS or run a (linux) script

>Then maybe call up your ISP and rant

You wouldn't be surprised how unhelpful and unfun that is

  user@host:~$ dig +short  aaaa  www.citi.com
  san.www.citi.com.edgekey.net.
  e16976.x.akamaiedge.net.

  user@host:~$ dig +short  aaaa  www.walmart.com
  www.walmart.com.cdn-wal.net.