IPv6 Unresponsive NS

Daniel Fallas

• January 09, 2019 06:18

Hello! I"m not normally one to ask for help as I normally figure it out myself, unfortunately having never bothered with IPv6 or have any experience in it, I"m a little stuck. I have been given /64 6 from my provider, they are active and I have added the range to my server, accounts all have been given a dedicated /128 and do work, if you went to the website address it works, AAAA have been added, etc. My issue is when I run a health check on a third party website for my IPv6, it comes back it finds the name servers, but the name servers are non-responsive. - Removed - Any help or advice is highly appreciated.

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  cPanelMichael

  • January 09, 2019 18:32

  Hello @Daniel Fallas, Here's a response from one of our Technical Analysts to a similar question in a support ticket: [QUOTE] cPanel only binds an IPv6 address to the network interface when a site is assigned that address under Assign IPv6 Address: Assign IPv6 Address - Version 76 Documentation - cPanel Documentation For this reason, if you do not want to assign these IPv6 addresses to cPanel accounts, I would recommend configuring these addresses on the interface in the operating system's networking configuration. Currently, only the shared address is configured in the operating system as noted when viewing the /etc/sysconfig/network-scripts/ifcfg-Bond_connection_1 file. I think the correct way to specify additional IPv6 addresses in this file is with the IPV6ADDR_SECONDARIES configuration setting: Red Hat Enterprise Linux 6 11.2. Interface Configuration Files - Red Hat Customer Portal
  Can you let me know if this information helps? Thanks!

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  Daniel Fallas

  • January 09, 2019 21:58

  Michael, I've looked at the documentation provided but I don't believe this isn't what I'm looking for. On a health check (example domain abc.com) abc.com

  • 4/4 Nameservers have IPv6 addresses (pass)
  • 4/4 IPv6 Nameservers failed to respond (fail)
  • Webservers has IPv6 records but only available on IPv4 nameservers (warning)
  • IPv6 AAAA found for bare domain (abc.com, pass)
  • IPv6 Webserver responded (pass)
  • Secure Connection for IPv6 (pass)
  • SMTP IPv6 failed to connect to SMTP server (fail)
  • rDNS for IPv6 Mail Server (warning) Does not have rDNS
  • IPv6 Glue (fail)

  - Removed Please Attach Images to Your Posts -

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  cPanelMichael

  • January 10, 2019 16:01

  Hello @Daniel Fallas, Can you open a

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  Daniel Fallas

  • January 13, 2019 20:30

  Thanks Michael. 11187623

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  cPanelMichael

  • January 14, 2019 14:42

  Hi @Daniel Fallas, Can you update us with the outcome once you've confirmed the recommended solution addresses the issue? Thanks!

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  Daniel Fallas

  • January 14, 2019 15:36

  Regarding the nameservers not responding this has been fixed after a session with cPanel support. The issue was the server wasn"t using the IPv6 addresses as I was using x:x:x:x::a-d rather than x:x:x:x::1-4 which was already assigned to an account, therefore actively required by the server and a-d wasn"t, I could of gone the advanced way and done everything via terminal but to be safe I did it the recommended way which was to change my IPv6 addresses on my 4 nameservers to 1-4 instead of a-d. I"m yet to resolve my mailserver IPv6 issue and still waiting for my domain provider to update my AAAA records for .com, unfortunately their website isn"t working to manually do it myself.

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