[193530] in North American Network Operators' Group
Re: Fwd: Any Yahoo DNS admins on list?
daemon@ATHENA.MIT.EDU (Dan States via NANOG)
Tue Jan 31 12:55:49 2017
X-Original-To: nanog@nanog.org
Date: Tue, 31 Jan 2017 03:04:40 +0000 (UTC)
To: Brielle Bruns <bruns@2mbit.com>
In-Reply-To: <CAJbMJ31MrNZKmmD-8iQq4MOfxKb=RbVA_z73hBeeagjimqSCkw@mail.gmail.com>
From: Dan States via NANOG <nanog@nanog.org>
Reply-To: Dan States <dstates@yahoo-inc.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Looks like this may be a peering issue, we're investigating. =C2=A0
Regards
-- =E2=99=9C Dan States - Yahoo DNS Operations
On Saturday, January 28, 2017, 4:29:12 AM PST, Stephen Strowes <stephe...@g=
mail.com> wrote:I assume somebody knows about this thread :-)
S.
---------- Forwarded message ----------
> On Jan 27, 2017, at 6:30 PM, Brielle Bruns <bruns@2mbit.com> wrote:
>
> Hello!
>
> Don't suppose there's a Yahoo admin in the DNS department that can invest=
igate/debug a Geolocation issue?
>
> It appears that Yahoo's Geolocation is putting CenturyLink's IPv6 address=
es as being in .BR, causing not only the two CL/Qwest recursive servers (20=
5.171.2.65/205.171.3.65/ 2001:428::1/2001:428::2), but recusive servers hos=
ted on biz customer IPv6 6RD ranges to return non-US Yahoo servers (and be =
agonizingly slow).
>
> =3D=3D=3D=3D=3D
> View from local powerdns recursor, dual stacked, but preferring ipv6 for =
resolving:
>
> root@noc:~# dig mg.mail.yahoo.com @127.0.0.2
>
> ; <<>> DiG 9.9.5-9+deb8u9-Debian <<>> mg.mail.yahoo.com @127.0.0.2
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50638
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;mg.mail.yahoo.com.=C2=A0 =C2=A0 =C2=A0 =C2=A0 IN=C2=A0 =C2=A0 A
>
> ;; ANSWER SECTION:
> mg.mail.yahoo.com.=C2=A0 =C2=A0 1349=C2=A0 =C2=A0 IN=C2=A0 =C2=A0 CNAME=
=C2=A0 =C2=A0 fd-geoycpi-uno.gycpi.b. yahoodns.net.
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 300 IN A=C2=A0 =C2=A0 200.152.162.1=
61
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 300 IN A=C2=A0 =C2=A0 200.152.162.1=
35
>
> ;; Query time: 240 msec
> ;; SERVER: 127.0.0.2#53(127.0.0.2)
> ;; WHEN: Fri Jan 27 17:20:52 MST 2017
> ;; MSG SIZE=C2=A0 rcvd: 116
>
> =3D=3D=3D=3D=3D
> View from CL/Qwest IPv4 (likely dual stacked) and IPv6 recursors:
>
> root@noc:~# dig mg.mail.yahoo.com @205.171.2.65
>
> ; <<>> DiG 9.9.5-9+deb8u9-Debian <<>> mg.mail.yahoo.com @205.171.2.65
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8308
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;mg.mail.yahoo.com.=C2=A0 =C2=A0 =C2=A0 =C2=A0 IN=C2=A0 =C2=A0 A
>
> ;; ANSWER SECTION:
> mg.mail.yahoo.com.=C2=A0 =C2=A0 758=C2=A0 =C2=A0 IN=C2=A0 =C2=A0 CNAME=C2=
=A0 =C2=A0 fd-geoycpi-uno.gycpi.b. yahoodns.net.
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 138 IN A=C2=A0 =C2=A0 200.152.162.1=
61
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 138 IN A=C2=A0 =C2=A0 200.152.162.1=
35
>
> ;; Query time: 17 msec
> ;; SERVER: 205.171.2.65#53(205.171.2.65)
> ;; WHEN: Fri Jan 27 17:21:35 MST 2017
> ;; MSG SIZE=C2=A0 rcvd: 127
>
>
> root@noc:~# dig mg.mail.yahoo.com @2001:428::1
>
> ; <<>> DiG 9.9.5-9+deb8u9-Debian <<>> mg.mail.yahoo.com @2001:428::1
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24138
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;mg.mail.yahoo.com.=C2=A0 =C2=A0 =C2=A0 =C2=A0 IN=C2=A0 =C2=A0 A
>
> ;; ANSWER SECTION:
> mg.mail.yahoo.com.=C2=A0 =C2=A0 464=C2=A0 =C2=A0 IN=C2=A0 =C2=A0 CNAME=C2=
=A0 =C2=A0 fd-geoycpi-uno.gycpi.b. yahoodns.net.
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 214 IN A=C2=A0 =C2=A0 200.152.162.1=
61
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 214 IN A=C2=A0 =C2=A0 200.152.162.1=
35
>
> ;; Query time: 46 msec
> ;; SERVER: 2001:428::1#53(2001:428::1)
> ;; WHEN: Fri Jan 27 17:23:38 MST 2017
> ;; MSG SIZE=C2=A0 rcvd: 127
>
> =3D=3D=3D=3D=3D
> Google recursor for reference:
>
> root@noc:~# dig mg.mail.yahoo.com @8.8.8.8
>
> ; <<>> DiG 9.9.5-9+deb8u9-Debian <<>> mg.mail.yahoo.com @8.8.8.8
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13327
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 512
> ;; QUESTION SECTION:
> ;mg.mail.yahoo.com.=C2=A0 =C2=A0 =C2=A0 =C2=A0 IN=C2=A0 =C2=A0 A
>
> ;; ANSWER SECTION:
> mg.mail.yahoo.com.=C2=A0 =C2=A0 1459=C2=A0 =C2=A0 IN=C2=A0 =C2=A0 CNAME=
=C2=A0 =C2=A0 fd-geoycpi-uno.gycpi.b. yahoodns.net.
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A=C2=A0 =C2=A0 216.115.100.1=
24
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A=C2=A0 =C2=A0 208.71.44.31
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A=C2=A0 =C2=A0 216.115.100.1=
23
> fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A=C2=A0 =C2=A0 208.71.44.30
>
> ;; Query time: 27 msec
> ;; SERVER: 8.8.8.8#53(8.8.8.8)
> ;; WHEN: Fri Jan 27 17:21:59 MST 2017
> ;; MSG SIZE=C2=A0 rcvd: 159
>
>
>
> For reference, CL/Qwest's IPv6 range for 6RD is 2602::/24.
>
> This appears to be impacting Yahoo, Yahoo Mail, Flickr, etc (aka Yahoo ow=
ned properties).
>
>
> Thanks!
>
> --
> Brielle Bruns
> The Summit Open Source Development Group
> http://www.sosdg.org=C2=A0 =C2=A0 /=C2=A0 =C2=A0 =C2=A0http://www.ahbl.or=
g
