 1  2605:6000:0:8::f:7acc (2605:6000:0:8::f:7acc)  0.372 ms  0.323 ms  0.282 ms
 2  ae15.ARTNTXAF02H.chtrse.com (2605:6000:0:4::f:87e9)  4.002 ms  3.977 ms  10.884 ms
 3  * * *
 4  lag-23.mcr11dllbtxlb.netops.charter.com (2605:6000:0:4::2:1e)  1.464 ms  1.574 ms  1.560 ms
 5  * * *
 6  * *
    lag-26.hstqtx0209w-bcr00.netops.charter.com (2001:1998:0:4::528)  6.351 ms
 7  * * *
 8  lag-0.pr2.atl20.netops.charter.com (2001:1998:0:4::51f)  18.577 ms  18.572 ms  18.428 ms
 9  * * *
10  e0-36.core2.bna1.he.net (2001:470:0:429::2)  32.553 ms  32.720 ms  32.563 ms
11  * * *
12  * * *
13  equinix-ix.dfw2.packet.net (2001:504:0:5:0:5:4825:1)  24.591 ms  24.553 ms  24.604 ms
14  * * *
15  * * *
16  dfw.source.kernel.org (2604:1380:4641:c500::1)  24.423 ms  26.020 ms  24.415 ms

On Apr 28, 2023, at 11:35 AM, Sam Thomas <sthomas@lart.net> wrote:

Actual data from a Spectrum residential customer in DFW.

First, IPv4:

<ns:~> trace dfw.source.kernel.org
traceroute to dfw.source.kernel.org (139.178.84.217), 64 hops max, 40
byte packets
1 my.router 0.389 ms 0.350 ms 0.292 ms
2 142-254-130-077.inf.spectrum.com (142.254.130.77) 8.423 ms 8.408
ms 8.080 ms
3 lag-63.artrtx2801h.netops.charter.com (24.28.88.17) 27.167 ms
25.065 ms 21.977 ms
4 lag-22.artntxaf01r.netops.charter.com (24.175.49.233) 10.718 ms
10.083 ms 15.886 ms
5 lag-23.mcr11crtntxjt.netops.charter.com (24.175.36.224) 13.386 ms
11.560 ms 11.297 ms
6 lag-21.rcr01dllatx37.netops.charter.com (24.175.49.0) 11.339 ms
   lag-28.rcr01dllatx37.netops.charter.com (24.175.33.246) 11.904 ms
128.186 ms
7 lag-414.dllstx976iw-bcr00.netops.charter.com (66.109.6.52) 12.603 ms
   lag-14.dllstx976iw-bcr00.netops.charter.com (66.109.6.88) 12.172 ms
   lag-414.dllstx976iw-bcr00.netops.charter.com (66.109.6.52) 12.299 ms
8 lag-302.pr3.dfw10.netops.charter.com (209.18.43.77) 21.570 ms
   lag-0.pr3.dfw10.netops.charter.com (66.109.5.121) 11.763 ms
   lag-302.pr3.dfw10.netops.charter.com (209.18.43.77) 12.182 ms
9 dls-b23-link.ip.twelve99.net (62.115.156.208) 11.515 ms * 11.706 ms
10 packethost-ic-369414.ip.twelve99-cust.net (213.248.72.3) 11.870
ms 30.246 ms 18.199 ms
11 * * *
12 * * *
13 dfw.source.kernel.org (139.178.84.217) 12.021 ms 12.076 ms 11.922 ms

ping dfw.source.kernel.org
PING dfw.source.kernel.org (139.178.84.217): 56 data bytes
64 bytes from 139.178.84.217: icmp_seq=0 ttl=50 time=11.590 ms
64 bytes from 139.178.84.217: icmp_seq=1 ttl=50 time=11.785 ms

IPv6:

<ns:~> trace6 dfw.source.kernel.org
traceroute6 to dfw.source.kernel.org (2604:1380:4641:c500::1) from
2603:8080:REDACTED, 64 hops max, 20 byte packets
1 2603-8080-REDACTED.res6.spectrum.com 0.404 ms 0.340 ms 0.322 ms
2 2603-90c5-0003-000e-0000-0000-0000-0001.inf6.spectrum.com 10.308
ms 7.901 ms 9.902 ms
3 lag-63.artrtx2801h.netops.charter.com 17.008 ms 10.523 ms 11.077 ms
4 lag-22.artntxaf01r.netops.charter.com 14.638 ms * *
5 lag-23.mcr11crtntxjt.netops.charter.com 11.090 ms 11.612 ms 12.234 ms
6 * * *
7 lag-414.dllstx976iw-bcr00.netops.charter.com 12.572 ms *
   lag-24.dllstx976iw-bcr00.netops.charter.com 12.160 ms
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 *^C

ping6 dfw.source.kernel.org
PING6(56=40+8+8 bytes) 2603:8080:REDACTED --> 2604:1380:4641:c500::1
^C
--- dfw.source.kernel.org ping6 statistics ---
5 packets transmitted, 0 packets received, 100.0% packet loss

I have a Linode VM in Dallas that I also can't get to via IPv6.
Traffic appears to take the same path for IPv4.

On Wed, Apr 26, 2023 at 10:50 AM Tom Rini <trini@konsulko.com> wrote:

Hey all,

I'm posting this here in hopes of getting the attention of someone that
can get this issue resolved, or at least an internal ticket filed. I've
tried the customer-facing tech support and not been able to get such a
thing done.

In short, from within Spectrum's US IPv6 network (verified in both North
Carolina and Ohio), dfw.source.kernel.org (2604:1380:4641:c500::1) is
unreachable and connections time out. This site is otherwise fine and
globally accessible via IPv6, tested on both Qwest and T-Mobile hosted
systems. This is a regression from some time in early April this year.

--
Tom