Re: [ipv6-wg] RIPE Atlas and NAT64 (Was: IPv6-only network during RIPE 71)
On Tue, Nov 3, 2015 at 3:18 PM, Gert Doering <gert@space.net> wrote:
RIPE Atlas probe is a host. It should not care much if it's traffic is going via NAT64 box or not.
Actually detecting NAT64 and flagging as such, and being able to run tests on a group of NAT64-hidden probes might add value...
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. But I agree, it would be nice to get a list of probes behind NAT64 w/o wasting time and credits ;) -- SY, Jen Linkova aka Furry
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
participants (2)
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Gert Doering -
Jen Linkova