LACNIC rDNS - Do not nameserver with multiple A and AAAA

[fischerdouglas]

What is the name of the domain?

0.168.192.in-addr.arpa

What is the issue you’re encountering

LACNIC do not accept the name servers Cloudflare is providing-me. LACNIC portals complains about existing more then one A and AAAA entries for each name server.

What steps have you taken to resolve the issue?

I considered to insert the 3 IPv4 and 3 IPv6 address for which the nameserver FQDN solves in LACNIC.
But I remembered that in somewhere of Cloudflare docs there is a recommendation to not do this, becaus nameserver names are like resouse pools, and cloudflare can change zones between those resource pools to impove availability.

So, right now, I don’t know what to do.

I see two possible solutions:

1. Cloudflare creating multiple name-server names with only one A and AAAA
   Instead of maria.sn.cloudflare.com with
   192.168.0.10
   10.11.12.13
   172.16.10.10
   2001:db8:a::53
   2001:db8:b::53
   2001:db8:c::53
   create maria-a.sn.cloudflare.com with
   192.168.0.10
   2001:db8:a::53
   maria-b.sn.cloudflare.com with
   10.11.12.13
   2001:db8:b::53
   maria-c.sn.cloudflare.com with
   172.16.10.10
   2001:db8:c::53

2. LACNIC start to accept delegating reverse dns zones to nameservers that points to more than 1 A ans AAAA addresses.

What feature, service or problem is this related to?

Nameservers

What are the steps to reproduce the issue?

• Create a reverse zone in Cloudflare
• Take the 2 nameservers names cloudflare gives you.
• Go to LACNIC Portal, IP/ASN resources, Manage.
• Select the IP block you need, click on delegate rDNS, delegate, add.
• Insert the two nameservers name Cloudflare gave you, click next.
  You will reach

Screenshot of the error