Google weird routing?

Thu May 23 19:47:10 UTC 2019

Hey folks,
Looking at an mtr going out via a couple of different transit circuits,
Google seems to be doing weird things.

RTT pinging google.com is coming up with like 250-300ms times, but mtr's
are telling me my packets are hitting google's network very quickly.
Google's network then seems to send them on a rather long trip before
reaching the google.com frontend servers.

An example:

 6  213.200.123.170 (213.200.123.170)  3.450 ms
ae-1-3502.ear4.Newark1.Level3.net (4.69.211.177)  1.469 ms  1.634 ms
 7  72.14.213.34 (72.14.213.34)  1.336 ms  1.372 ms  1.381 ms
 8  108.170.248.52 (108.170.248.52)  2.474 ms *  2.150 ms
 9  216.239.62.170 (216.239.62.170)  1.401 ms 216.239.62.150
(216.239.62.150)  1.400 ms 216.239.62.168 (216.239.62.168)  2.985 ms
10  216.239.57.136 (216.239.57.136)  20.043 ms 216.239.59.0 (216.239.59.0)
 20.235 ms 216.239.57.196 (216.239.57.196)  20.382 ms
11  209.85.254.241 (209.85.254.241)  2.155 ms 108.170.235.61
(108.170.235.61)  74.295 ms 209.85.241.43 (209.85.241.43)  78.593 ms
12  72.14.239.155 (72.14.239.155)  96.254 ms 216.239.57.196
(216.239.57.196)  19.672 ms 72.14.239.155 (72.14.239.155)  96.328 ms
13  108.170.235.217 (108.170.235.217)  153.391 ms 108.170.236.119
(108.170.236.119)  153.445 ms 108.170.235.221 (108.170.235.221)  152.858 ms
14  172.253.51.111 (172.253.51.111)  220.084 ms 66.249.94.141
(66.249.94.141)  218.039 ms 72.14.239.197 (72.14.239.197)  75.008 ms
15  209.85.241.86 (209.85.241.86)  276.281 ms 72.14.235.160 (72.14.235.160)
 276.104 ms  277.497 ms
16  108.170.235.105 (108.170.235.105)  217.030 ms 209.85.248.4
(209.85.248.4)  217.338 ms 66.249.94.141 (66.249.94.141)  217.573 ms
17  72.14.236.75 (72.14.236.75)  276.349 ms  276.097 ms 72.14.239.235
(72.14.239.235)  277.180 ms
18  bom07s01-in-f14.1e100.net (216.58.199.142)  276.139 ms  276.980 ms
64.233.174.27 (64.233.174.27)  279.212 ms

As you can see from this traceroute output, Level3 is delivering my packets
to Google (hop#7 and beyond) just fine, however all of the hops including
#7 and beyond are all inside of google's network.

My packets are originating from AS 394102.

Anyone from google have any idea what's going on there?

Thanks,
Matt
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.nanog.org/pipermail/nanog/attachments/20190523/9b25b4c3/attachment.html>