Today is World IPv6 Day, a 24-hour test of IPv6.
The goal of the Test Flight Day is to motivate organizations across the industry – Internet service providers, hardware makers, operating system vendors and web companies – to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out.
The BBC (www.bbc.co.uk), for example, is now running on the IPv6 address 2001:4b10:bbc::1
Even if you don’t join the fun, you can test your connection for readiness.
RIPE NCC is providing a running measurement of status.