Hi, On Wed, Jul 29, 2026 at 06:04:19PM +0100, Peter Keller via routing-wg wrote:
*Context / timeline:* The end-user's building-managed ISP changed their upstream international connectivity provider. Prior to this change, routing to the affected destination appeared to transit Colt directly into TDC in Europe with no issues. Since the change, we have observed the latency problem described below. We have not been able to confirm with certainty which provider the ISP switched to, but the timing strongly correlates with the onset of the issue.
Basically, this won't ever get fixed until the end user raises a ticket with their provider, and if it doesn't get fixed in a reasonable timeframe, raise a big stink and change ISP. There is a reason why some transits are cheap, and ISPs that do not care for anything but "ooh cheap transit" need to hear from their customers why this wasn't such a good idea. They control their network, they need to take responsibility for it. (Do I sound like 20 years of talking to "wanna buy cheap transit?" has worn out my patience with certain transit networks a bit? maybe ;-) ). Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard, Karin Schuler, Sebastian Cler Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: Dr. Frank Thiäner D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279