[ipv6-wg] Why did the Google IPv6 statistics dropped for the Netherlands?

Because from the 15th to the 26th September the Google Ad system just stopped impressing all of our ads. Well not quite all - 1 or 2 snuck through, which was enough to make the percentage reports go nuts! Here's the plot of daily total delivered ads for the Netherlands across that last year or so.

Geoff




[cid:0e40327c-7187-4872-9f44-59df7300f959 at AUSP282.PROD.OUTLOOK.COM]

> On 10 Oct 2023, at 9:28 pm, Robert Kisteleki <robert at ripe.net> wrote:
>
> (It's a conjecture but) I find it plausible that Google does some network engineering in various regions, including the one serving NL, and selectively turning IPv6 on/off for stuff they serve.
>
> If what the Google stats is shown what percentage of traffic *to them* is on IPv6, then these changes may cause the stats to change. "Geoff's ads" are offered by Google but served by Geoff's infra, which is not Google's so it is unaffected.
>
> Robert
>
>
> On 2023-10-10 11:50, Eric Vyncke (evyncke) via ipv6-wg wrote:
>> A measurement issue at Google is probably where to look (or some peering/routing with Google AS)
>> -éric
>> *From: *ipv6-wg <ipv6-wg-bounces at ripe.net> on behalf of Mikael Abrahamsson via ipv6-wg <ipv6-wg at ripe.net>
>> *Date: *Tuesday, 10 October 2023 at 11:35
>> *To: *Marco Davids (Private) <mdavids at forfun.net>
>> *Cc: *RIPE IPv6 WG <ipv6-wg at ripe.net>
>> *Subject: *Re: [ipv6-wg] Why did the Google IPv6 statistics dropped for the Netherlands?
>> On Tue, 10 Oct 2023, Marco Davids (Private) via ipv6-wg wrote:
>>> Hello,
>>>
>>> Is there anyone in this group that would dare to speculate on the sudden drop in IPv6 adoption for my country, the Netherlands on this URL?
>> https://stats.labs.apnic.net/ipv6/NL <https://stats.labs.apnic.net/ipv6/NL> doesn't show equivalent drop.
>> Last I heard presentation about how APNIC measures this, it's through
>> Google ads served to web browsers, so that sounds like similar method to
>> what google might be using.
>> --
>> Mikael Abrahamsson    email: swmike at swm.pp.se
>> --
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