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Mihir_Joshi's avatar
Mihir_Joshi
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Sep 22, 2017

Is it cmpulsory to enable DNS IPv6 to IPv4 to host IPv6 listner?

Comment made 1 day ago by Mihir Joshi  2

 

Hi,

 

I have a question.

 

Is it compulsory to enable option "DNS IPv6 to IPv4" if we host IPv6 listener on BIG-IP DNS (GTM)?

 

We are experiencing strange issue. User belong to one of the Europe region not able to connect application when they connect from their home Wi-Fi which have IPv6 addresses enabled.

 

On GTM we have IPv6 listener and IPv4 listener which shares same DNS profile which enabled with option "DNS IPv6 to IPv4" (Secondary). Because of this end user receives two records in IPv6 addresses in format of "::xxx.xxx.xxx.xxx".

 

Do you think this could be a reason for issue we are currently experiencing?

 

When we ask client to change their IP schema from IPv6 to IPv4 it works perfectly fine.

 

Regards,

 

Mihir

 

application delivery
BIG-IP DNS
ipv4
ipv6

2 Replies

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  • mudder12345_334's avatar
    mudder12345_334
    Icon for Nimbostratus rankNimbostratus
    Sep 23, 2017

    Rather than focusing on one client that may or may not have its own broken setup, you need to make sure you get IPv6 on your site working dual-stacked with IPv4. That is, make sure IPv6 works on your site independent of IPv4. Many client machines, particularly mobile devices or those on cable connections, will have IPv6 (and some don't have native IPv4).

     

    That said, it sounds like the client you were focusing on may be seeing a IPv4-mapped IPv6 address, which is likely not what you want. Don't enable the "DNS IPv6 to IPv4" if you don't know what it does. Here is a link explaining that feature https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/dns-services-implementations-12-0-0/9.html

     

    • Mihir_Joshi's avatar
      Mihir_Joshi
      Icon for Nimbostratus rankNimbostratus
      Sep 28, 2017

      Thanks for your reply.

       

      Let me go thru article provided by you.

       

      Regards,

       

      Mihir