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This would be almost funny if it didn't affect my ability to do things I need to do. It's been 5 weeks and 5 days since my last service call, when the upstream ingress issue was determined to be with the Cox plant and not with any of my equipment. It was fixed by plant maintenance and was working fine, but then last night at midnight my connection dropped with T2, T3, and T4 timeouts. That's a reasonable time to do maintenance and I assume the drop was due to scheduled maintenance. Nothing wrong with that.
Unfortunately, as is often the case, something was done incorrectly during this maintenance and I'm now getting persistent Dynamic Range Window violations which are an indication of upstream ingress. In the past, these issues have been caused by plant technicians who performed a maintenance task incorrectly.
Looks like I'm in for my regularly scheduled every-6-weeks service call. I'll wait a bit longer to make sure it's bad enough that the tech will be able to spot it, but I know that these things always get worse and they never fix themselves. No one else is going to call something like this in since my neighborhood is mostly elderly and they don't do anything that requires reliable upstream connections.
I'm just venting for now. I know the whole routine. I go through it every 6 weeks. I just wish the technicians would be more careful when performing maintenance so I didn't have to keep calling for service. This has to be costing Cox a lot of money.