Questions about DNS64 operation
Sukmoon Lee
smlee at sk.com
Thu Nov 30 04:04:16 UTC 2017
>
> Why not just exclude 127.0.0.1 and not map to AAAA at all?
If it is answer 127.0.0.1 for test.com/IN/A in an IPv4, the client will not attempt to connect to the network (only attempt to connect to loopback).
However, if it is query test.com/IN/AAAA in an IPv6, DNS64 will answer 64:ff9b::7f00:1 address. (dns64 prefix is 64:ff9b::/96).
Then, the client will attempt to connect to 64:ff9b::7f00:1(NAT64).
I want to prevent the client from attempting to network up to NAT64.
So I want to reply 127.0.0.1 to ::1 in DNS64.
And I was using to below option. But this is not what I want.
dns64 64:ff9b::/96 {
...
mapped { !127/8; any; };
}
Thanks.
>
> > On 29 Nov 2017, at 7:32 pm, Sukmoon Lee <smlee at sk.com> wrote:
> >
> > Hello.
> >
> > I testing DNS64 using 64:ff9b::/96(prefix).
> > Some domain(IN/A) is responses to 127.0.0.1/IN/A.
> > Under DNS64, this domain(IN/AAAA) is working 64:ff9b::7f00:1.
> >
> > I want to response ::1 under DNS64.
> > Is there any way?
> >
> > Thanks.
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