Hi, On Tue, Nov 03, 2015 at 03:23:29PM +0100, Jen Linkova wrote: > I think there is a dirty hack to do it now: run a measurements from > v6-enabled probes to v4-only host, check the results for the > destination address they were using.
Haha, I know something you don't :-)
$ host ipv4only.arpa
ipv4only.arpa has address 192.0.0.171
ipv4only.arpa has address 192.0.0.170
... if that host ever resolves to a v6 address, you're behind a DNS64.
(It won't *ping*, but it will give away DNS64 and the prefix used - of
course pinging a well-known-ipv4-only-host would even validate whether
the NAT64 is working...)
Gert Doering
-- NetMaster
--
have you enabled IPv6 on something today...?
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