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I have a problem on my computer. If I open a torrent the download starts and after a few moments it goes back to 0. Then I lose all connectivity, Windows says there's no Internet connection and the only way to get it back is have to reboot the computer/modem. Once I do that everything works fine unless i start downloading a torrent.
What I tested:
It's not the client, it happens with old and new utorrent clients and deluga. It's not the router, all other computers on the network have Internet normally, while I go offline.
This is not a case of low speed because the torrent suck up the connection. Both the torrent and navigation stops and Windows 10 network center says no internet connection, disabling/reenabling the network has no effect, only reboot fixes it.
Any ideas?
Does your IP address change after the reboot? Does your ISP have any sort of prohibition on torrenting? Is it your router, or your ISP's, and are you getting "public" IP addresses, or do they start with 192.168.anything or 10.anything? There's a whole lot more research that you have to do, and more information that you need to provide, before you can get any useful help here. – Jeff Zeitlin – 2018-02-12T15:49:01.287
I had problems in the past with a Comcast modem/router combo blocking or shutting down an ethernet LAN port for unknown reasons. As this was the port my secondary hub/switch was connected to, most of my LAN lost access beyond the switch as well. My one device connected to a second LAN port of the comcast device was had connectivity to the internet but could not get to anything on the switch. I did not have a torrent client. I suspected it was parental control or firewall related but never quite resolved it. This sounds like a similar problem. – Yorik – 2018-02-12T16:07:01.937
Note that some of their firewall settings had obvious bugs (block external pings allowed external pings, but blocked internal pings etc), so I presumed there was some misconfiguration causing this. – Yorik – 2018-02-12T16:08:03.517
Go to a browser, enter 192.168.100.1, this will bring you to the Comcast modem diagnostics page. Go to the log section, are there any items in the log that say "T3 dropout" or any "T" based errors? – Tim_Stewart – 2018-02-12T20:08:17.930