[SOLVED] System loses networking

[Spindrift300]

Same issue on a Lenovo Tiny P3. Networking drops out at least every 48 hours. Unplugging the network cable from the NIC and re-plugging effectively resets networking and brings it back. If the post-up fix doesn’t work, I will investigate a cronjob to test and restart networking as a workaround but I’m following this thread for a real fix.

Edit: the post-up fix solved my issues!

 

[ghostfrik]

This is probably not the same issue, but I just wanted to post it in case I help anyone else looking for answers!

My network was dropping whenever I run transmission (or any other torrent client) on a Proxmox VM. My router is not entirely virtualized - Proxmox is connected to another router before it. In my case - this is a regular TPLink Archer. Turns out Archers have "DoS Protection" automatically enabled and it was blacklisting the NIC of the Proxmox VM with the torrent client. I disabled this feature and everything works like a charm now.

The cause might not be the same for you guys, but it's worth a try.