Saturday, February 26, 2011

The Problem With IPv6

ipv6photo © 2010 Aldon Hynes | more info (via: Wylio)
For "normal" people, the move to IPv6 should be mostly uneventful. The creation of the DNS system shields users from having to memorize the actual IP addresses of servers they want to use. Without DNS you wouldn't browse to rather you would head on over to to read about the latest events. Because of DNS a regular user doesn't care that soon will be something like FE80:0000:0000:0000:0202:B3FF:FE1E:8329 or FE80::0202:B3FF:FE1E:8329 in the collapsed form.

But, System Admins and us technical types routinely think about machines in a network by their IP address. Ask any of your IT friends to name an IP number of a machine they use or their favorite IP subnets and guaranteed, they will be able to give you one, or lots. It may be the IP for the main router of their NAT network (often 192.168.something.something) or it might be the IP of one of the big DNS services ( is Google's). These are numbers that can be kept in someone's head and actually used.

IPv6 numbers, not so much.

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