In short: The upgrade to kernel 4 could resolve for Realtek ethenet devices to be renamed and getting one or more connections of your Proxmox disconnected. I solved this by removing the persistant-net rules and on the next reboot the adapters where back like they were after my initial install.
The long version:
I was having serious bandwidth issues between my workstation and my Proxmox server at home. After a while I found out all the other machines where connecting fine with and through the Proxmox (as it also runs the Sophos firewall). As they where using the quad Intel E1000 adapter I have. I got around 10mbit and a lot of stalling connections. After some looking around I found out on the Proxmox that one interface was missing from the bond (2 * 1Gbit onboard Realtek adapters) between my workstation and the server.
The solution:
I removed /etc/udev/rules.d/70-persistent-net.rules and did a reboot. The file is generated on boot automatically and all my NIC's got their right name back.
Check:
No I have my full 1.88Gbit back. I also fixed some configuration issues on the bond itself as this is not the right behavior. Now unplugging a cable gets me to 941mbit instead of 10mbit or less.
The long version:
I was having serious bandwidth issues between my workstation and my Proxmox server at home. After a while I found out all the other machines where connecting fine with and through the Proxmox (as it also runs the Sophos firewall). As they where using the quad Intel E1000 adapter I have. I got around 10mbit and a lot of stalling connections. After some looking around I found out on the Proxmox that one interface was missing from the bond (2 * 1Gbit onboard Realtek adapters) between my workstation and the server.
The solution:
I removed /etc/udev/rules.d/70-persistent-net.rules and did a reboot. The file is generated on boot automatically and all my NIC's got their right name back.
Check:
No I have my full 1.88Gbit back. I also fixed some configuration issues on the bond itself as this is not the right behavior. Now unplugging a cable gets me to 941mbit instead of 10mbit or less.