[outages] Spectrum/Charter IPv6 connectivity to CloudFlare down in Texas
Tom Strickx
tstrickx at cloudflare.com
Thu Apr 20 11:18:04 EDT 2023
Charter has acknowledged the issue, and is tracking this internally
as INC000026440632. Appears to be an issue with a linecard in Houston.
We've rerouted IPv6 out of Dallas for now to mitigate impact. Sorry for the
trouble!
--
Tom Strickx
Principal Network Engineer
AS13335 - Cloudflare
On Thu, Apr 20, 2023 at 2:05 PM Tom Strickx <tstrickx at cloudflare.com> wrote:
> Hey folks,
>
> Could either of you contact me off-list so I can investigate? A specific
> start-of-problem would be super helpful.
> --
> Tom Strickx
> Principal Network Engineer
> AS13335 - Cloudflare
>
>
> On Thu, Apr 20, 2023 at 4:38 AM Daniel Marks via Outages <
> outages at outages.org> wrote:
>
>> Have been dealing with this for 2 days, nobody at Spectrum can figure
>> this out.
>>
>> Daniel Marks
>> May Mobility, Inc
>>
>> >
>> > On Apr 19, 2023, at 19:26, Carl Perry via Outages <outages at outages.org>
>> wrote:
>> >
>> > Things have been rather slow the last couple of days, just figured out
>> why; No IPv6 connectivity to any CloudFlare services.
>> >
>> > > mtr -6 --report-wide cloudflare.com
>> > Start: 2023-04-19T23:20:42+0000
>> > HOST: defiant Loss% Snt Last Avg Best Wrst StDev
>> > 1.|-- 2603-8081-2340-2868-0215-17ff-fe94-6457.res6.spectrum.com
>> 0.0% 10 3.6 19.1 1.5 93.2 36.1
>> > 2.|-- 2603-90c5-0003-0180-0000-0000-0000-0001.inf6.spectrum.com
>> 0.0% 10 14.5 36.6 11.3 171.2 50.0
>> > 3.|-- lag-63.hcr02rdrktxaz.netops.charter.com 0.0% 10 18.8
>> 37.3 12.0 143.9 45.3
>> > 4.|-- lag-19.ausxtxir02r.netops.charter.com 60.0% 10 65.8
>> 30.2 11.7 65.8 24.9
>> > 5.|-- lag-22.rcr01hstqtx02.netops.charter.com 80.0% 10 26.5
>> 25.5 24.5 26.5 1.4
>> > 6.|-- lag-16.hstqtx0209w-bcr00.netops.charter.com 90.0% 10
>> 25.7 25.7 25.7 25.7 0.0
>> > 7.|-- lag-12.dllstx976iw-bcr00.netops.charter.com 40.0% 10
>> 25.4 26.3 18.2 44.4 9.5
>> > 8.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
>> >
>> > IPv4 works however:
>> >
>> > > mtr -4 --report-wide cloudflare.com
>> > Start: 2023-04-19T23:20:21+0000
>> > HOST: defiant Loss% Snt Last
>> Avg Best Wrst StDev
>> > 1.|-- _gateway 0.0% 10 2.1
>> 1.8 1.4 2.1 0.2
>> > 2.|-- cpe-70-114-160-1.austin.res.rr.com 0.0% 10 51.9
>> 34.4 14.3 149.7 42.1
>> > 3.|-- lag-63.hcr01rdrktxaz.netops.charter.com 0.0% 10 13.1
>> 38.5 13.1 159.1 44.6
>> > 4.|-- lag-19.ausutxla01r.netops.charter.com 0.0% 10 18.1
>> 21.0 14.3 34.8 6.0
>> > 5.|-- lag-22.rcr01dllatx37.netops.charter.com 0.0% 10 23.4
>> 23.3 18.3 33.3 4.3
>> > 6.|-- lag-14.dllstx976iw-bcr00.netops.charter.com 0.0% 10 19.8
>> 27.0 16.1 51.2 11.9
>> > 7.|-- lag-0.pr3.dfw10.netops.charter.com 0.0% 10 39.3
>> 28.5 14.1 62.3 16.7
>> > 8.|-- 141.101.74.104 40.0% 10 53.2
>> 44.3 19.4 120.2 39.2
>> > 9.|-- 172.71.168.2 0.0% 10 28.3
>> 28.8 10.8 79.4 19.5
>> > 10.|-- 104.16.133.229 0.0% 10 122.0
>> 42.8 16.9 122.0 34.4
>> >
>> > It's kind of wild how many things don't fall back to IPv4 quickly (lots
>> of Android TV apps) or at all (.NET). I tried reaching out to Spectrum
>> support, but being a lowly consumer I was only told that "The modem doesn't
>> have any filters" and that "the problem may be on the CloudFlare side",
>> which was sadly what I predicted. So, I figured I would raise the issue
>> here in the hopes that actual network people would see it.
>> >
>> > -Carl
>> >
>> >
>> > _______________________________________________
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>> > Outages at outages.org
>> >
>> https://www.google.com/url?q=https://puck.nether.net/mailman/listinfo/outages&source=gmail-imap&ust=1682551587000000&usg=AOvVaw0omaxNXXnf3Ff4dHAQDhA8
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>>
>
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