In message <AANLkTinvcmuL_M0bEBCuN-_zunAYFCe1PNsNW9FceJ-0@mail.gmail.com>, Will iam Herrin writes:
On Thu, Mar 3, 2011 at 5:01 PM, Hammer <bhmccie@gmail.com> wrote:
A little better. So what's the difference between 6to4 and 6in4? Isn't 6in4 what HE uses?
I haven't used 6in4 so I couldn't tell you.
6to4 is a stateless tunnelling protocol. You have a dual-stacked router. It has an IPv4 address, 1.2.3.4. Therefore it supports a 6to4 IPv6 network numbered 2002:0102:0304::/48. Somebody tries to send a packet to 2002:0102:0304::1, it goes to a 6to4 router which encapsulates the IPv6 packet in an IPv4 packet and sends it to 1.2.3.4.
6to4 is handy as a toy or for experimenting, but it relies on a loose network of generous volunteers who, while generous, are neither generous nor numerous enough to support production traffic.
Any ISP that is delivering IPv6 to their clients would be insane to not run a 6to4 relays for return traffic to 2002::/16. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org