Hello Brielle, The issue has been resolved, I confirmed the Qwest/CenturyLink resolver you mentioned is being properly routed. -- ♜ Dan States - Yahoo DNS Operations On Monday, January 30, 2017, 7:04:40 PM PST, Dan States <dstates@yahoo-inc.com> wrote:Looks like this may be a peering issue, we're investigating. Regards -- ♜ Dan States - Yahoo DNS Operations On Saturday, January 28, 2017, 4:29:12 AM PST, Stephen Strowes <stephe...@gmail.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 investigate/debug a Geolocation issue?
It appears that Yahoo's Geolocation is putting CenturyLink's IPv6 addresses as being in .BR, causing not only the two CL/Qwest recursive servers (205.171.2.65/205.171.3.65/ 2001:428::1/2001:428::2), but recusive servers hosted on biz customer IPv6 6RD ranges to return non-US Yahoo servers (and be agonizingly slow).
===== 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. IN A
;; ANSWER SECTION: mg.mail.yahoo.com. 1349 IN CNAME fd-geoycpi-uno.gycpi.b. yahoodns.net. fd-geoycpi-uno.gycpi.b. yahoodns.net. 300 IN A 200.152.162.161 fd-geoycpi-uno.gycpi.b. yahoodns.net. 300 IN A 200.152.162.135
;; 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 rcvd: 116
===== 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. IN A
;; ANSWER SECTION: mg.mail.yahoo.com. 758 IN CNAME fd-geoycpi-uno.gycpi.b. yahoodns.net. fd-geoycpi-uno.gycpi.b. yahoodns.net. 138 IN A 200.152.162.161 fd-geoycpi-uno.gycpi.b. yahoodns.net. 138 IN A 200.152.162.135
;; 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 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. IN A
;; ANSWER SECTION: mg.mail.yahoo.com. 464 IN CNAME fd-geoycpi-uno.gycpi.b. yahoodns.net. fd-geoycpi-uno.gycpi.b. yahoodns.net. 214 IN A 200.152.162.161 fd-geoycpi-uno.gycpi.b. yahoodns.net. 214 IN A 200.152.162.135
;; Query time: 46 msec ;; SERVER: 2001:428::1#53(2001:428::1) ;; WHEN: Fri Jan 27 17:23:38 MST 2017 ;; MSG SIZE rcvd: 127
===== 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. IN A
;; ANSWER SECTION: mg.mail.yahoo.com. 1459 IN CNAME fd-geoycpi-uno.gycpi.b. yahoodns.net. fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A 216.115.100.124 fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A 208.71.44.31 fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A 216.115.100.123 fd-geoycpi-uno.gycpi.b. yahoodns.net. 184 IN A 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 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 owned properties).
Thanks!
-- Brielle Bruns The Summit Open Source Development Group http://www.sosdg.org / http://www.ahbl.org