[181458] in North American Network Operators' Group
Re: Youtube / IPv6 / Netherlands
daemon@ATHENA.MIT.EDU (Jared Mauch)
Thu Jun 25 11:37:19 2015
X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <558C1F67.3050307@gmail.com>
Date: Thu, 25 Jun 2015 11:37:16 -0400
To: Scott Whyte <swhyte@gmail.com>
Cc: nanog list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> On Jun 25, 2015, at 11:33 AM, Scott Whyte <swhyte@gmail.com> wrote:
>=20
>=20
>=20
> On 6/25/15 07:49, Jared Mauch wrote:
>>=20
>>> On Jun 25, 2015, at 10:08 AM, Phil Rosenthal <pr@isprime.com> wrote:
>>>=20
>>>=20
>>>> On Jun 25, 2015, at 9:32 AM, Christopher Morrow =
<morrowc.lists@gmail.com> wrote:
>>>>=20
>>>> geolocation is hard :(
>>>=20
>>> If you would like to see how Google has your geolocation set, check:
>>> curl http://redirector.c.youtube.com/report_mapping
>>>=20
>>> You might want to force it both IPv4 and IPv6 to see if there is any =
difference.
>>=20
>>=20
>> And run it a few times, because it may think your IP in asia is in =
Amsterdam, etc..
>>=20
>> [jared@eng0 ~]$ curl -4 =
http://redirector.c.youtube.com/report_mapping
>> 203.105.73.114 =3D> ams09x03 : superx_isp_number: 8 (203.105.64.0/20) =
[s]
>> [jared@eng0 ~]$ curl -4 =
http://redirector.c.youtube.com/report_mapping
>> 203.105.73.114 =3D> sjc07x04 : superx_isp_number: 1 (203.105.64.0/20) =
[u]
>=20
> Maybe its actually telling you where youtube is serving videos from =
for that IP address, in realtime, based on a large number of variables =
only one of which is where on the Earth that IP might be located.
That might be possible, but sending traffic to Europe vs another site =
smells
like some other issue.
It=E2=80=99s also interesting to look at the internalized CIDR it=E2=80=99=
s matching against.
Take puck as an example.
puck:~$ curl http://redirector.c.youtube.com/report_mapping -4
204.42.254.5 =3D> ord31x04 : superx_isp_number: 1 (204.42.224.0/19) [u]
puck:~$ curl http://redirector.c.youtube.com/report_mapping -6
2001:418:3f4::5 =3D> sjc07s17 (2001:418:200::/39) [u]
Many interesting results as a consequence.
- jared=
