Google weird routing?
Jared Mauch
jared at puck.nether.net
Thu May 23 19:55:42 UTC 2019
I would say that it says BOM at the start of the name, perhaps they are sending you to India?
Are you using a DNS service that uses ECS facing the various CDN/Cloud providers or a different one?
- Jared
> On May 23, 2019, at 3:47 PM, Matt Harris <matt at netfire.net> wrote:
>
> 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
>
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