AS2828 XO / Verizon Route Flapping?

Greetings,

We're seeing a pretty consistent drop of traffic every 60s for about 5s
inside of AS2828 (formerly xo.net, now Verizon).

Started seeing alerts due to this at Sun, 06 Sep 2020 06:04:04 +0000.

During the 5s we're getting 'No route to host' bounces, eg:

connect to address 2a02:c0:301:0:ffff::31 and port 80: No route to host

MTR:

Keys: Help Display mode Restart statistics Order of fields quit

                             Last 181 pings
1. 2604:a580:2::2 …
2. 2604:a580::1:0:0:12 …
3. 2604:a580::1:0:0:d …
4. 2610:18:18c:4000::5 …
5. 2610:18::2046 …???..>…???..???..
6. 2001:7f8:4:1::847:1 …???..???..???..?
7. 2001:4600:0:100::29 …>…???..???..???..
8. 2001:4600:0:100::3 …???..???..???..
9. 2001:4600:0:100::2a …>…>…>…>???..>…???..>…>.???..
10. 2001:4600:0:200::62 …>…???..>…>…>>…???..>…>…>>…>…???..
11. 2001:4600:9:100::2e …>…???..>…???..>…>…???..
12. 2a02:c0:1:1::6 …???..???..???..
13. 2a02:c0:1::4:1 …???..???..???..???
14. 2a02:c0:1:401::25 …???..???..???..
15. 2a02:c0:301:0:ffff::34 …???..???..???..

Scale: .:3 ms 1:8 ms 2:14 ms 3:26 ms a:56 ms b:85 ms c:137 ms

Traceroute:

traceroute to wrigleys (2a02:c0:301:0:ffff::34), 30 hops max, 80 byte packets
1 2604:a580:2::2 (2604:a580:2::2) 0.357 ms 0.320 ms 0.243 ms
2 2604:a580::1:0:0:12 (2604:a580::1:0:0:12) 0.641 ms 0.302 ms 0.271 ms
3 2604:a580::1:0:0:d (2604:a580::1:0:0:d) 0.472 ms 0.427 ms 0.313 ms
4 2610:18:18c:4000::5 (2610:18:18c:4000::5) 0.873 ms 0.906 ms 0.855 ms
5 cir1.london2-eng.us.xo.net (2610:18::2046) 91.539 ms 91.471 ms 91.413 ms
6 2001:7f8:4:1::847:1 (2001:7f8:4:1::847:1) 92.361 ms 92.570 ms 92.513 ms
7 ti3004c400-lo0-0.ti.telenor.net (2001:4600:0:100::5) 123.541 ms 123.460 ms 123.388 ms
8 ti0001c360-lo0-0.ti.telenor.net (2001:4600:0:100::23) 123.516 ms 123.474 ms 123.419 ms
9 ti0275c360-lo0-0.ti.telenor.net (2001:4600:0:100::2) 123.305 ms 123.332 ms 123.264 ms
10 ti0169a400-lo0-0.ti.telenor.net (2001:4600:0:200::62) 129.801 ms 129.767 ms 129.717 ms
11 2001:4600:9:100::2e (2001:4600:9:100::2e) 128.751 ms 128.703 ms cir1.london2-eng.us.xo.net (2610:18::2046) 91.658 ms !H

MTR going the other way:

regula (2a02:c0:301:0:ffff::38) 2020-09-07T13:24:34+0000
Keys: Help Display mode Restart statistics Order of fields quit

                             Last 181 pings
1. 2a02:c0:301:0:ffff::1 …
2. 2a02:c0:1:401::22 …
3. 2a02:c0:1::1 …
4. 2a02:c0:1:1::7 …
5. 2001:4600:9:100::2d …
6. 2001:4600:0:100::2 …
7. 2001:4600:0:100::23 …
8. 2001:4600:0:100::5 …
9. 2001:4600::4 …
10. 2001:7f8:4:1::b0c:1 …???..???..???..
11. 2610:18::30c4 …???..>…???..???..
12. 2610:18:18c:4000::6 …???..???..???..
13. 2604:a580::1:0:0:e …>…???.>…>…???..>…>…???..>>…??
14. 2604:a580:2:0:5254:ff:fe …???..???..???..

Anyone from Verizon watching who could look into this? Anyone else
seeing similar issues?

Feel free to contact me off-list if that'd help. We're also trying to
reach out to our provider to see if they can help.

Thanks!

Stephen