[outages] DNS resolution of ebay.com

Tue Jan 17 15:29:34 EST 2012

Update -- there's a routing loop between our upstream provider and Sprint.
Hence the lack of DNS resolution. =)

nagios:/home/fbulk# tcptraceroute 66.135.207.137
Selected device eth0.3, address 96.31.0.5, port 39237 for outgoing packets
Tracing the path to 66.135.207.137 on TCP port 80 (www), 30 hops max
...
 4  ins-db1-te-13-2-219.desm.netins.net (167.142.60.157)  7.058 ms  7.077 ms
6.990 ms
 5  ins-dc1-et-8-2.desm.netins.net (167.142.67.5)  6.924 ms  6.993 ms  6.901
ms
 6  ins-kc2-et-8-1.kmrr.netins.net (167.142.67.30)  6.917 ms  6.866 ms
6.875 ms
 7  ins-kc1-et-9-1.kmrr.netins.net (167.142.67.42)  6.933 ms  6.962 ms
6.912 ms
 8  144.223.35.225  15.118 ms  15.038 ms  15.105 ms
 9  144.232.25.223  18.342 ms  18.489 ms  18.651 ms
10  * 144.232.25.220 24.455 ms  24.455 ms
11  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  24.558 ms  24.743
ms  24.768 ms
12  144.232.25.223  27.911 ms  27.835 ms  31.434 ms
13  144.232.25.220  34.015 ms  33.832 ms  33.904 ms
14  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  34.305 ms  34.130
ms  34.044 ms
15  144.232.25.223  37.271 ms  37.255 ms  37.176 ms
16  144.232.25.220  43.179 ms  43.329 ms  43.242 ms
17  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  43.514 ms  43.587
ms  43.319 ms
18  144.232.25.223  46.578 ms  46.786 ms  46.814 ms
19  144.232.25.220  52.628 ms  52.710 ms  52.638 ms
20  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  53.218 ms  52.951
ms  52.957 ms
21  144.232.25.223  55.959 ms  55.881 ms  55.976 ms
22  144.232.25.220  62.223 ms  62.040 ms  61.964 ms
23  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  65.137 ms  62.283
ms  62.218 ms
24  144.232.25.223  65.440 ms  65.291 ms  65.405 ms
25  144.232.25.220  88.613 ms  71.442 ms  71.560 ms
26  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  71.528 ms  108.371
ms  79.077 ms
27  144.232.25.223  75.200 ms  75.223 ms  74.923 ms
28  * 144.232.25.220 80.707 ms  81.060 ms
29  sl-crs2-chi-0-7-3-0.sprintlink.net (144.232.19.119)  104.564 ms  81.222
ms  81.126 ms
30  144.232.25.223  84.306 ms  84.223 ms  84.163 ms
Destination not reached
nagios:/home/fbulk#

Frank

-----Original Message-----
From: outages-bounces at outages.org [mailto:outages-bounces at outages.org] On
Behalf Of Frank Bulk - iName.com
Sent: Tuesday, January 17, 2012 2:20 PM
To: outages at outages.org
Subject: [outages] DNS resolution of ebay.com

We've received two calls complaining about access to www.ebay.com.  Further
checking shows that none of our DNS servers can resolve either www.ebay.com
or ebay.com.  DIG returns a "timed out".  Flushing our caches made no
difference, and our upstream provider's DNS servers are acting the same way.

Digging against 8.8.8.8 works fine, but against the 4 NS servers listed for
ebay, they don't, probably because their DNS server is all ebaydns.com.

nagios:/tmp# dig A ebay.com @96.31.0.5

; <<>> DiG 9.7.3 <<>> A ebay.com @96.31.0.5
;; global options: +cmd
;; connection timed out; no servers could be reached
nagios:/tmp# dig A ebay.com @167.142.225.5

; <<>> DiG 9.7.3 <<>> A ebay.com @167.142.225.5
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 41569
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ebay.com.                      IN      A

;; Query time: 4433 msec
;; SERVER: 167.142.225.5#53(167.142.225.5)
;; WHEN: Tue Jan 17 14:19:12 2012
;; MSG SIZE  rcvd: 26

nagios:/tmp#

nagios:/tmp# dig NS ebay.com @8.8.8.8

; <<>> DiG 9.7.3 <<>> NS ebay.com @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58612
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ebay.com.                      IN      NS

;; ANSWER SECTION:
ebay.com.               63033   IN      NS      sjc-dns2.ebaydns.com.
ebay.com.               63033   IN      NS      smf-dns2.ebaydns.com.
ebay.com.               63033   IN      NS      smf-dns1.ebaydns.com.
ebay.com.               63033   IN      NS      sjc-dns1.ebaydns.com.

;; Query time: 37 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue Jan 17 14:18:22 2012
;; MSG SIZE  rcvd: 126

nagios:/tmp#

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