nanog mailing list archives
Re: Production-scale NAT64
From: William Herrin <bill () herrin us>
Date: Thu, 20 Aug 2015 14:49:12 -0400
On Thu, Aug 20, 2015 at 1:22 PM, Ca By <cb.list6 () gmail com> wrote:
On Thu, Aug 20, 2015 at 9:36 AM, William Herrin <bill () herrin us> wrote:Seriously though, if you want to run a v6-only network and still support access to IPv4 Internet resources, consider 464XLAT or DS-Lite.NAT64 is a required component of 464XLAT.
Sort of, technically, but not really. NAT64 on its own implies DNS64 and IPv6 client software. Funky gyrations in the DNS64 server cause the IPv6 software on the client to originate with IPv6 addresses that the NAT64 server knows how to convert to IPv4 addresses. 464XLAT does not require DNS64 and provides client software with an IPv4 interface. IPv4 software that has no idea IPv6 exists sends IPv4 packets which get translated to IPv6 packets. Those packets are routed to the carrier NAT box which then translates these specially crafted IPv6 packets back to IPv4 packets. Functionally, 464XLAT is an IPv6 VPN between your IPv4 client software and an IPv4 carrier NAT box. Don't let the fact that it's double-translating instead of encapsulating and decapsulating fool you -- it's a VPN. Regards, Bill Herrin -- William Herrin ................ herrin () dirtside com bill () herrin us Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
Current thread:
- Production-scale NAT64 Jawaid Shell2 (Aug 20)
- Re: Production-scale NAT64 Valdis . Kletnieks (Aug 20)
- Re: Production-scale NAT64 Clinton Work (Aug 20)
- Re: Production-scale NAT64 William Herrin (Aug 20)
- Re: Production-scale NAT64 Ca By (Aug 20)
- Re: Production-scale NAT64 William Herrin (Aug 20)
- Re: Production-scale NAT64 Tore Anderson (Aug 25)
- Re: Production-scale NAT64 Ca By (Aug 20)
- Re: Production-scale NAT64 Mark Tinka (Aug 25)
- Re: Production-scale NAT64 Tom Lanyon (Aug 25)
- Re: Production-scale NAT64 Izaac (Aug 26)
- Re: Production-scale NAT64 Mark Tinka (Aug 26)
- Re: Production-scale NAT64 Ca By (Aug 26)
- Re: Production-scale NAT64 Jared Mauch (Aug 26)
- Re: Production-scale NAT64 Mark Tinka (Aug 26)
- Re: Production-scale NAT64 Jared Mauch (Aug 26)
- Re: Production-scale NAT64 Mark Tinka (Aug 26)
- Re: Production-scale NAT64 Mark Tinka (Aug 26)