HE uses 6in4. 6in4 is basically the same protocol as 6to4, but, with defined end-points for point-to-point tunneling packets from multipoint to multipoint. 6to4, conversely, uses anycast to identify the tunnel exit point towards the IPv6 network or to identify the tunnel entry point towards the IPv4 segment. It depends on encoding the IPv4 address of the local encapsulating host sending the packet inside of the IPv6 source address in order to be able to identify the IPv4 destination after encapsulation. For 6to4, one end is almost always a single specific host which both generates the packets and does he IPv4 encapsulation. Owen On Mar 3, 2011, at 2:01 PM, Hammer wrote:
A little better. So what's the difference between 6to4 and 6in4? Isn't 6in4 what HE uses?
-Hammer-
"I was a normal American nerd." -Jack Herer
On Thu, Mar 3, 2011 at 3:54 PM, William Herrin <bill@herrin.us> wrote:
On Thu, Mar 3, 2011 at 3:41 PM, Hammer <bhmccie@gmail.com> wrote:
I need a cheat sheet.
nat64 6to4nat 6in4nat etc...
6to4 and 6in4 are not NAT. They're tunnels (VPNs) that allow two IPv6 nodes to talk to each other via an IPv4 backbone.
nat64 is NAT. It allows IPv6 endpoints to communicate with IPv4 endpoints.
nat44 is the IPv4 NAT you're used to. nat444 is carrier NAT (translated once by the customer and once again by the ISP, get it?)
-- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004