My ISP (Telia) doesn’t do native IPv6 yet (like most ISPs unfortunately). However, they do support something called IPv6 Rapid Deployment, also known as 6rd. What it does is fairly simply, it encodes in the information you get from your ISP during a DHCPv4 chat the information needed to set up a 6to4 tunnel with an endpoint provided by your ISP. Getting native v6 would be the best but this is probably the closest I’m going to get in a while.
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One of the things I find myself doing from time to time it to execute the whois command. This allows me to figure out to whom an IP(range) or domain belongs. However, when doing this on OS X, especially with IPv6 addresses I’m greeted with: $ whois 2a00:1450:400f:805::200e No match for "2a00:1450:400f:805::200e". >>> Last update of whois database: Tue, 07 Jun 2016 12:55:53 GMT <<< I figured I should explicitly ask it to treat this as IPv6 and found this in the man page:
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