7 Jun
2024
7 Jun
'24
9:13 a.m.
Hello everyone,
I have a question for those of you who have BGP announced subnets from
44Net, specifically regarding the configuration of rDNS (PTR) records
for each IP address within the subnet.
Recently, I received an allocation of a /24 subnet, which is announced
via my Data Center's ASN. Everything is functioning correctly, but I
need to configure rDNS for each IP address. This configuration is
essential for hosting email servers to prevent potential issues.
Here is a dlint output for my gateway's IP address:
root@eye:~# dlint 1.77.32.44.in-addr.arpa
;; dlint version 1.4.0, Copyright (C) 1998 Paul A. Balyoz
<pab(a)domtools.com>
;; Dlint comes with ABSOLUTELY NO WARRANTY.
;; This is free software, and you are welcome to redistribute it
;; under certain conditions. Type 'man dlint' for details.
;; command line: /usr/bin/dlint 1.77.32.44.in-addr.arpa
;; flags: inaddr-domain recursive.
;; using dig version 9.9.5
;; run starting: Fri Jun 7 15:10:37 EEST 2024
;; ============================================================
;; Now linting 1.77.32.44.in-addr.arpa
ERROR: no name servers found for domain 1.77.32.44.in-addr.arpa
===
;; Now linting 32.44.in-addr.arpa
;; Checking serial numbers per nameserver
;; 2024060700 ns1.de.ardc.net.
;; 2024060700 ns.ardc.net.
;; 2024060700 a.gw4.uk.
;; 2024060700 ns2.us.ardc.net.
===
Based on this output, I believe that the rDNS setup needs to be handled
by the ARDC staff. However, I wanted to confirm this to ensure I proceed
correctly.
I reached out to Chris off-list and received the following response:
"You already have the subdomain yo6rzv.ampr.org setup; you can add DNS
records under there. For each A record, a PTR record is automatically
added in the reverse zone."
From my understanding, this does not fully address my requirements,
since for example, if IP Address 44.32.77.2 needs to have the rDNS set
to -> something.yo44.net, this will not help.
I am aware that Chris and the ARDC staff are currently handling a high
volume of tickets and requests through the portal. Therefore, I am
turning to the community for assistance to avoid adding more to their
workload.
I appreciate any guidance you can provide and apologize in advance if
this question has been addressed previously. I could not find relevant
information in my email archive.
Thank you for your assistance.
Best regards,
Razvan - YO6RZV