Ever think about the four set number that identifies you while surfing the Internet (e.g: 192.123.124.231)? Probably not, unless you're into networks or multiplayer gaming.

The number forms part of the IPv4 protocol, yet this has long been due for replacement by IPv6. However many ISPs have ignored the technology, yet they may soon have little choice but to upgrade.

The growing number of Internet users and now 'always-on' (broadband etc.) connections may lead to problems:

But few ISPs, if any, yet see the need for the extra IP addresses that IPv6 allows them to provide. And most look as though they will continue to rely on IPv4 and the Dynamic Host Configuration Protocol (DHCP) to handle broadband users for some time to come.

Uri Rahamim, vice president and general manager of Hitachi Internetworking, believes service providers cannot ignore the need to upgrade to dual-stack IPv4/IPv6-enabled routers to handle more always-on broadband connections, mobile users and new services and applications.

IPv6 provides billions upon billions of unique, fixed IP addresses that service providers could assign to their subscribers, as well as improved data security, quality of service and management functions.

Rahamim predicts that ISPs around the world could begin to run out of numbers within a couple of years. Typically a weak tech/Telco sector doesn't help, with many providers preferring to pocket their income. More @ VNUNet.