In message <aanlktinvcmul_m0bebcun-_zunayfce1pnsnw9fce...@mail.gmail.com>, Will iam Herrin writes: > On Thu, Mar 3, 2011 at 5:01 PM, Hammer <bhmc...@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: ma...@isc.org
