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...? SpaceNet AG Vorstand: Sebastian v. Bomhard Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279