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Are there any convenient public, globally routable test addresses for IPv6?

Similar to how and tend to get used this way for IPv4?

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It should be noted that pinging an arbitrary service on the Internet that you don't control is a crappy connectivity test. – MDMarra Jun 6 '13 at 22:37
It's an excellent positive test, but not really a good negative test. – MikeyB Jun 7 '13 at 2:09
up vote 18 down vote accepted

The shortest I've seen is (2600::).

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Doesn't respond to UDP traceroute. – Michael Hampton Jun 6 '13 at 22:55
64 bytes from 2600::: icmp_seq=1 ttl=52 time=207 ms - works – Vi. Jun 6 '13 at 22:55
@Michael Lots of things don't respond to UDP traceroute these days. I tend to match the trace to the protocol in question (e.g. nmap --traceroute or tcptraceroute to port 80 for web servers.) – Gerald Combs Jun 6 '13 at 23:11

Handily enough, 2001:4860:4860::8888 and 2001:4860:4860::8844 are the IPv6 equivalents of and!

That's fairly easy to remember.

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Works, but I would prefer them to be like 2001::8888 or even 2001::2001 – Vi. Jun 6 '13 at 22:37
Strangely enough, these are the IP addresses for Google Public DNS. – Michael Hampton Jun 6 '13 at 22:39
Not so strangely… that's where I got them from :) – MikeyB Jun 7 '13 at 2:08
@Vi. That wouldn't work. 2001::/32 is reserved to Teredo. Both of your suggestions would be using a Teredo server on the IPv4 address But wouldn't be a valid address for a Teredo server. – kasperd Dec 14 '14 at 20:11

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