User: Langbein

Dual Stack has not failed - It's the only solution

On: After IPv4, How Will the Internet Function?

Dual stack has not failed - it's the only sensible way to migrate to IPv6. - Today, the Internet consist of two logical networks, IPv4 and IPv6 - Currently few customers are conected to both networks, but that will change in 2011 av beyond - In the future (20-100 years?), only IPv6 will be needed - By running dual stack on the PC/Server, the DNS will resolve which logical network you will use to access services - By running dual stack, you will (over time) migrate traffic from IPv4 to IPv6, and you don't have to bother that this process is going on. - By running av 6to4 tunnel, you never get rid of IPv4 (which eventually is not needed any more), so the tunneled access to IPv6 is a bad idea The dual stack adoption rate has been slow because of - Lack of SOHO routers with dual stack support (still a problem for $100 routers), but this is expected to change in 2011 - Lack of ISP routers capable of doing IPv6 in hardware (this problem is mostly solved now, but ISPs must invest in new routers, particularly at the edge of the network) - Lack of demand from customers - they have so far got IPv4 addresses ... - ISPs have only recently enabled dual stack in their core network, a configuration thing really Lack of IPv4 addresses will lead to IPv6 migration - Lack of IPv4 adresses will lead to NAT-ing of IPv4 for new customers which will have impact on services - Only IPv6 will provide you with ENOUGH public IP adresses (NOT-NATED) - Most ISPs are now ready with dual stack IPv4/IPv6 (I work for an ISP, so I know this) - Dual stack is not complicated, migration is toughest for those customers that can't software upgrade their firewall, beacause they must convert the firewall policies which can be complicated - Those who will provide services will serve on both IPv4 and IPv6 What's missing - Google, Youtube and others should annonce NEW services on IPv6 2-4 weeks before they do on IPv4, that would lead to IPv6 demand - At the moment, IPv4 and IPv6 are to separate networks that lead to the same supermarkets - with the same products. This is bad - IPv6 supermarkets should be more sexy At the end - Lots of public IP addresses are needed per user in the future, only IPv6 can provide us with all these addresses - Dual stack is the ideal way to migrate to IPv6, the DNS will migrate trafiic from IPv4 to IPv6 over time.