Google IPv6 measurements in Europe appear heading down...

Marco Sommani marco.sommani at
Fri Oct 24 12:54:19 CEST 2014

…and, does anyone know why today there is no IPv6 shown in the APNIC statistics of <> ?


> On 23/ott/2014, at 18:38, Eric Vyncke (evyncke) <evyncke at> wrote:
> For a couple of weeks, it seems that Google IPv6 measurements are heading down mainly for Europe. For example, here is a link to a presentation of the Google measurements for several European countries and USA. There is a clear drop in the last days/weeks for European countries but not for USA.
> This includes a big drop for my country (BE) :-O and I have checked with all Belgian ISP and they have no explanation as for them 'business as usual'. Apnic also does not show such a big drop.
> So, I am guessing either a 'bug' in Google measurements infrastructure in Europe or could it be that the IPv6 latency to Google has increased a lot so that Happy Eyeball prefers IPv4? Recent measurement of dual-stack latency to from several Belgian ISP gave 10% slower over IPv6.
> Any clue will be welcome
> -éric

Marco Sommani
Consiglio Nazionale delle Ricerche
Istituto di Informatica e Telematica
Via Giuseppe Moruzzi 1
56124 Pisa - Italia
work: +390506212127
mobile: +393487981019
fax: +390503158327
mailto:marco.sommani at

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