Facebook doesn't have a route to my ISP's (Cogeco) IPv6 space?

Thu Dec 20 23:09:08 UTC 2018

Hi Brain

Let's chat offlist to find why this is happening. The behaviour looks
unusual and needs more troubleshooting.

Thanks

Anurag Bhatia
(Hurricane Electric)

On Thu, Dec 20, 2018 at 11:06 PM Brian J. Murrell <brian at interlinx.bc.ca>
wrote:

> I've been trying to figure out why I can reach an IPv6 address at
> Facebook (2a03:2880:f012:3:face:b00c:0:1) through (only) one of my two
> Internet connections as well as via an HE IPv6 tunnel but not the other
> of my two ISP connections
>
> At one point in time a traceroute was dying inside of he.net:
>
>  Host                                      Loss%   Snt   Last   Avg  Best
> Wrst StDev
>  1. 2001:1970:5261:d600::1                  0.0%     7    2.1   1.3   0.7
>  2.9   0.8
>  2. 2001:1970:4000:82::1                    0.0%     7   10.0  14.0   8.3
> 37.9  10.6
>  3. 2001:1970:0:1a6::1                     16.7%     7   13.2 215.5  10.8
> 1031. 455.9
>  4. he.ip6.torontointernetxchange.net       0.0%     7   12.3  12.9
> 11.2  15.3   1.6
>  5. 100ge9-2.core2.chi1.he.net              0.0%     7   23.6  23.0
> 21.3  27.6   2.2
>  6. 100ge15-2.core1.chi1.he.net             0.0%     7   21.7  22.5
> 21.6  24.9   1.2
>  7. 100ge12-1.core1.atl1.he.net             0.0%     7   34.2  35.1
> 34.1  36.1   0.7
>  8. 100ge5-1.core1.tpa1.he.net              0.0%     7   49.1  46.6
> 44.8  49.1   1.5
>  9. 100ge12-1.core1.mia1.he.net             0.0%     7   51.6  54.5
> 50.5  73.3   8.3
> 10. ???
>
> But I think it getting that far time was an anomaly and frankly it
> usually dies even before exiting my ISP's (Cogeco) network like this:
>
>  Host                                       Loss%   Snt   Last   Avg
> Best  Wrst StDev
>  1. 2001:1970:5261:d600::1                   0.0%    33    0.6   0.7
>  0.6   1.0   0.1
>  2. 2001:1970:4000:82::1                     0.0%    33    8.2  10.8
>  8.1  40.5   5.6
>  3. 2001:1970:0:1a7::1                      15.2%    33   23.4  20.1
> 16.5  23.4   1.5
>  4. 2001:1970:0:61::1                       33.3%    33   16.8  17.6
> 14.5  25.9   2.5
>  5. 2001:1978:1300::1                        0.0%    33   16.0  17.5
> 14.2  29.6   3.1
>  6. 2001:1978:203::45                        0.0%    33   30.7  30.7
> 28.4  35.1   1.7
>  7. ???
>
> When I asked the kind folks at he.net for some advice about the problem
> (i.e. in the first traceroute above) their diagnosis was that
> Facebook's IPv6 router(s) likely didn't have a route back to my Cogeco
> IPv6 address.
>
> Trying to talk to my ISP (again, Cogeco) has been impossible.  One
> simply cannot reach the people who know more than how to reset your
> router and configure your e-mail.
>
> I wonder how I could go any further with this to confirm the diagnosis
> that Facebook doesn't have a route to the Cogeco network's IPv6 address
> space given that I only have access to my end of the path.
>
> Cheers,
> b.
>
>

-- 

Anurag Bhatia
anuragbhatia.com
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