Despite its benefits take up of IPv6 has been slow, and many sysadmins disable it by default. That’s a bad idea, since there is no easy way to change the setting back automatically across multiple machines.
We have had occasion in the past to lament the relatively low uptake of IPv6 to date, despite a growth in the number of connected devices. Analysis by Cisco suggests that this situation will improve somewhat in Australia, but even so less than half of all internet-connected devices worldwide will be IPv6-capable by 2017.
We’ve known for decades that the available pool of IPv4 address was eventually going to dry up, but despite numerous warnings usage of its successor IPv6 is still minimal. Why haven’t we migrated yet? Geoff Huston, chief scientist for regional internet registry APNIC, suggests that the answer is that carriers are too cheap to make the switch and are happy to rely on network address translation (NAT) systems instead.
Whether you are running your own home web server, need to remotely access your machine, or even were just curious, you may have found the need to find your system’s current external IP address. Many people use whatismyip.com to find out this information, but over the past few years I’ve been using an alternative service named icanhazip.com.