Comcast IPv6 issues..?
Steve Meuse
smeuse at mara.org
Wed Dec 3 20:34:39 UTC 2014
It's likely a reverse DNS error. If you look at the latency, it's within
range of the previous hops.
-Steve
On Wed, Dec 3, 2014 at 3:12 PM, Stephen Frost <sfrost at snowman.net> wrote:
> Hey all,
>
> Getting delays and seeing some pretty funky routes inside Comcast.
> All traces start from Ashburn, VA (2001:4830:167b::) and go to
> Chicago, IL (2610:150:4b0f::).
>
> Coming from Occaid/SIXXS (over a tunnel) through HE.net and have seen:
>
> Ashburn -> San Jose -> New York -> Chicago
> -----
> 3 sixxs-asbnva-gw.customer.occaid.net (2001:4830:e6:7::2) 9.955 ms
> 10.583 ms 10.17 ms
> 4 iad0-b0-ge2.hotnic.net (2001:4810:0:100::1) 9.726 ms 11.004 ms
> 9.956 ms
> 5 10gigabitethernet2-2.core1.ash1.he.net (2001:504:0:2::6939:1) 10.069
> ms 10.674 ms 12.465 ms
> 6 2001:559::db5 (2001:559::db5) 94.83 ms 95.593 ms 94.768 ms
> 7 pos-2-2-0-0-cr01.sanjose.ca.ibone.comcast.net (2001:558:0:f58d::1)
> 96.779 ms 99.591 ms 94.964 ms
> 8 he-0-7-0-0-cr01.newyork.ny.ibone.comcast.net (2001:558:0:f5ba::2)
> 89.969 ms 91.143 ms 92.507 ms
> 9 he-0-11-0-0-cr01.350ecermak.il.ibone.comcast.net
> (2001:558:0:f5b8::2) 97.411 ms 88.731 ms 87.457 ms
> 10 he-0-10-0-0-pe04.350ecermak.il.ibone.comcast.net
> (2001:558:0:f8cc::2) 87.444 ms 88.756 ms 87.505 ms
> 11 2001:550:2:2::32:2 (2001:550:2:2::32:2) 89.812 ms 88.774 ms 87.558
> ms
> -----
>
> Ashburn -> New York (but with lots of latency..) -> Chicago
> -----
> 3 sixxs-asbnva-gw.customer.occaid.net (2001:4830:e6:7::2) 9.549 ms
> 10.652 ms 10.107 ms
> 4 iad0-b0-ge2.hotnic.net (2001:4810:0:100::1) 9.975 ms 11.044 ms
> 10.009 ms
> 5 10gigabitethernet2-2.core1.ash1.he.net (2001:504:0:2::6939:1) 17.423
> ms 11.05 ms 12.27 ms
> 6 2001:559::db5 (2001:559::db5) 95.197 ms 95.968 ms 94.793 ms
> 7 he-2-6-0-0-cr01.ashburn.va.ibone.comcast.net (2001:558:0:f8d2::1)
> 105.158 ms 101.428 ms 94.993 ms
> 8 he-0-7-0-0-cr01.newyork.ny.ibone.comcast.net (2001:558:0:f5ba::2)
> 89.735 ms 90.266 ms 92.577 ms
> 9 he-0-11-0-0-cr01.350ecermak.il.ibone.comcast.net
> (2001:558:0:f5b8::2) 89.813 ms 92.963 ms 92.383 ms
> 10 he-0-10-0-0-pe04.350ecermak.il.ibone.comcast.net
> (2001:558:0:f8cc::2) 87.401 ms 88.15 ms 87.085 ms
> 11 2001:550:2:2::32:2 (2001:550:2:2::32:2) 122.387 ms 124.288 ms
> 122.409 ms
> -----
>
> Ashburn -> Chicago -> New York -> Chicago
> -----
> 3 sixxs-asbnva-gw.customer.occaid.net (2001:4830:e6:7::2) 9.926 ms
> 10.183 ms 9.978 ms
> 4 iad0-b0-ge2.hotnic.net (2001:4810:0:100::1) 9.961 ms 11.37 ms
> 9.973 ms
> 5 10gigabitethernet2-2.core1.ash1.he.net (2001:504:0:2::6939:1) 9.95
> ms 18.258 ms 9.951 ms
> 6 2001:559::db5 (2001:559::db5) 94.959 ms 96.413 ms 95.001 ms
> 7 he-1-10-0-0-cr01.chicago.il.ibone.comcast.net (2001:558:0:f552::1)
> 92.457 ms 92.964 ms 89.965 ms
> 8 he-0-7-0-0-cr01.newyork.ny.ibone.comcast.net (2001:558:0:f5ba::2)
> 89.789 ms 91.291 ms 97.333 ms
> 9 he-0-11-0-0-cr01.350ecermak.il.ibone.comcast.net
> (2001:558:0:f5b8::2) 87.518 ms 95.961 ms 87.506 ms
> 10 he-0-10-0-0-pe04.350ecermak.il.ibone.comcast.net
> (2001:558:0:f8cc::2) 87.406 ms 86.414 ms 87.425 ms
> 11 2001:550:2:2::32:2 (2001:550:2:2::32:2) 87.517 ms 86.589 ms 87.506
> ms
> -----
>
> Thoughts?
>
> Thanks,
>
> Stephen
>
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