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I have a requirement that my direct access client should always get the IPv4 address of the server (Server will always have an IPv4 address).
I know that, DNS64 sends two DNS queries to the corporate DNS server ; 1 for IPv6 and 1 for IPv4 and if it gets a response for IPv6, it will prefer that to send the response back to the client.

In my case, the server may or may not have an IPv6 address. I would like to have below configuration:

  • DNS64 sends DNS queries only for IPv4 address.
  • Avoid NAT64 to nat the IPv4 address to IPv6 address. I would like to get IPV4 address only OR IPv4 mapped IPv6 address. I do have specific needs for this which I cannot share here. :(


Are there any ways to achieve above configuration ?


Thanks in advance.

Arunmu
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1 Answers1

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To force dns64 to return Only IPv4 record, exclude { any ; } ;

Example:

:dns64 64:ff9b::/96 {
    clients { 2001:db8:cafe:1::/64; };
    exclude { any; };
};
slm
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Adolphe Kubwimana
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