[outages] Comcast/Cogent Peering issue at 56 Marietta

[Mitch]

Anyone else seeing packet loss starting at the peering point for Comcast
and Cogent at 56 Marietta Ga? Had someone mention it on IRC about seeing
issues from Comcast customers. I ran a few MTR's to some of our customers
and found one site in the Atlanta area that I could reproduce the issue.
Others in the metro area were fine if they bypassed that data center/peers.
like xo to Comcast was fine. On this location I don't have an actual device
to do a reverse path on.

MTR from my VPS in Buffalo(75.127.15.150) to 75.147.194.94 in Lithia
Springs, GA 30122

Host
                                                          Loss%   Snt
Last   Avg  Best  Wrst StDev
 1. buf-vps3.chicagovps.net
                                                           0.0%   109
 0.0   0.0   0.0   0.1   0.0
 2. host.colocrossing.com
                                                           0.0%   109
 0.8   0.7   0.5   5.6   0.6
 3. te7-4.ccr01.buf02.atlas.cogentco.com
                                                            0.0%   109
 0.3  31.8   0.3 209.5  58.5
 4. te8-8.ccr02.cle04.atlas.cogentco.com
                                                            0.0%   109
 5.5  40.1   5.4 352.9  65.8
 5. te4-4.ccr01.cmh02.atlas.cogentco.com
                                                            0.0%   109
 8.2  35.8   8.2 201.0  52.1
 6. te4-7.ccr01.cvg02.atlas.cogentco.com
                                                            0.0%   108
10.9  31.0  10.7 246.5  53.2
 7. te4-1.ccr01.ind01.atlas.cogentco.com
                                                            0.0%   108
12.9  38.7  12.9 222.8  49.9
 8. te0-4-0-2.ccr21.atl01.atlas.cogentco.com
                                                            0.0%   108
24.5  24.5  24.1  30.6   0.8
 9. te0-7-0-23.ccr21.atl02.atlas.cogentco.com
                                                           0.0%   108
24.4  24.4  24.2  27.1   0.3
10. comcast.atl02.atlas.cogentco.com
                                                            3.7%   108
78.3  77.7  75.7  81.5   1.3
11. pos-3-7-0-0-cr01.56marietta.ga.ibone.comcast.net
                                                           11.1%   108
77.2  79.0  76.4  93.2   2.0
12. 68.86.93.206
                                                           11.1%   108
76.4  80.5  76.4 216.4  17.8
13. xe-0-1-0-0-sur01.l1douglas.ga.atlanta.comcast.net
                                                          10.2%   108
77.2  81.5  76.9 163.1  14.6
14. te-18-10-cdn02.l1douglas.ga.atlanta.comcast.net
                                                          13.0%   108
94.2  95.5  80.0 435.2  35.6
15. 75-147-194-94-Atlanta.hfc.comcastbusiness.net
                                                          14.0%   108
85.7  86.2  84.5 101.6   1.9
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