Problems with removing NAT from a network

Jima nanog at
Sat Jan 8 19:20:26 CST 2011

On 1/7/2011 12:39 AM, Matthew Kaufman wrote:
> If one end is behind a NAT64 and there is no mechanism for discovering
> the NAT64's IPv6 interface prefix and mapping algorithm (and at present
> there is not), there is no way to send IPv6 IP packets from the
> IPv6-only host to IPv4 literal addresses (that is to say, addresses
> learned via a mechanism other than DNS responses synthesized by the
> DNS64 part of the NAT64 "solution") on the IPv4 Internet through said
> NAT64.

  While a rather inelegant solution, it just popped into my head that 
one could do an AAAA query for a known-value A record (i.e., under, and based on a response (if any), replace the known IP value 
with the IP which with one wants to connect.
  A little weird, but it's a thought.


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