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alexkemp

Member

Registered: 2018-05-14

Posts: 334  

Virgin Media blocking Open-Source Sites

As best as I can tell it is a BGP routing error. However, I have zero formal education in these matters, and would appreciate feedback from those that do. Here are my discoveries, as brief as I can make it.

Up until early June 2024 I visited this site daily, but then started receiving a network timeout on every access every day. https://downforeveryoneorjustme.com/ said that the site was fine. devuan.org showed identical behaviour (it took something like 20 minutes to timeout).

Come 17 June I discovered that kde.org also showed identical behaviour. All 3 URLs route to AS24940 (HETZNER-AS, DE) and, in consequence, none of them will complete access.

I sent an email giving detailed info on 17 June:

URL             IP                Prefix          Registrar        ASN

kde.org         85.10.198.55      85.10.192.0/18  NameCheap, Inc.  24940
devuan.org      116.202.138.214   116.202.0.0/16  OVH sas          24940
dev1galaxy.org  136.243.229.210   136.243.0.0/16  Gandi SAS        24940

Here's a typical traceroute for all 3:

$ traceroute kde.org
traceroute to kde.org (85.10.198.55), 30 hops max, 60 byte packets
 1  192.168.0.1 (192.168.0.1)  1.858 ms  2.505 ms  3.523 ms
 2  * * *
 3  nott-core-2b-ae80-650.network.virginmedia.net (81.109.166.69)  18.119 ms  23.939 ms  24.265 ms
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *
17  * * *
18  * * *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  * * *
26  * * *
27  * * *
28  * * *
29  * * *
30  * * *

libreoffice.org was the same + another site that I now cannot recall.

I just checked all sites just now and - dammit! - VM has fixed it & I can get there now (first time; bloody typical):

$ traceroute dev1galaxy.org
traceroute to dev1galaxy.org (136.243.229.210), 30 hops max, 60 byte packets
 1  192.168.0.1 (192.168.0.1)  1.739 ms  2.719 ms  3.324 ms
 2  * * *
 3  nott-core-2b-ae80-650.network.virginmedia.net (81.109.166.69)  21.985 ms  22.713 ms  22.972 ms
 4  * * *
 5  eislou2-ic-1-ae3-0.network.virginmedia.net (62.254.85.145)  36.503 ms  36.098 ms  37.644 ms
 6  ae21-0.lon20.core-backbone.com (80.255.9.125)  37.261 ms  18.530 ms  18.654 ms
 7  ae1-2014.nbg40.core-backbone.com (81.95.15.206)  35.371 ms  35.713 ms  41.184 ms
 8  core-backbone.hetzner.com (5.56.20.254)  40.178 ms  32.628 ms core-backbone.hetzner.com (81.95.15.6)  39.969 ms
 9  core22.fsn1.hetzner.com (213.239.254.233)  43.019 ms core24.fsn1.hetzner.com (213.239.245.54)  42.058 ms core21.fsn1.hetzner.com (213.239.254.217)  42.799 ms
10  ex9k2.dc7.fsn1.hetzner.com (213.239.245.110)  41.598 ms ex9k2.dc7.fsn1.hetzner.com (213.239.254.190)  34.075 ms  34.289 ms
11  seppia.devuan.org (5.9.97.46)  38.485 ms  37.534 ms  42.895 ms
12  dev1galaxy.org (136.243.229.210)  35.336 ms  36.364 ms  36.561 ms

Was my assumption of faulty BGP routing accurate? Any other possible reasons?

(I was writing this on SFS (StopForumSpam) just now - I'm a mod there - and just as I got ready to post it, after numerous "Previews" Cloudflare threw up a challenge, but without the URL to allow me to identify myself as a human. The 'Back' button allowed me to save the text, and here I am)

(slightly rewritten to try to make clearer)

Last edited by alexkemp (2024-06-26 13:56:02)

Camtaf

Member

Registered: 2019-11-19

Posts: 423  

Re: Virgin Media blocking Open-Source Sites

I have no, (have not had),  problems online using Virgin, through their router, so would suspect it is something with your routing - other than that, I can't help.

Last edited by Camtaf (2024-06-26 08:36:19)

alexkemp

Member

Registered: 2018-05-14

Posts: 334  

Re: Virgin Media blocking Open-Source Sites

I have no …  problems online using Virgin, through their router

Until this happened I also only had the usual problems with Virgin (local box going awol, usual stuff). I use their Hub 3.0 router (VMDG505 / TG2492LG-VM). Astonishing gigabit WiFi + router speeds, although my computer is only 100M so that is a bit of a waste of time.

It was only because I made a daily visit to this forum that I realised that there was an issue, and looked a little deeper.

Thanks for a fast response, Camtaf.