[SOLVED] Fresh PVE install - network issues

harpmonkey

Member
Oct 28, 2021
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So, I have been running a home Proxmox install for a couple of years on a NUC 11 with no issues - running Ubuntu, Home Assistant and a few other bits and pieces. Bit of an amateur with regards to Linux and Networking, but have typically gotten by without too many hiccups.
My setup was due for a bit of a refresh, so I bought some new SSDs and decided to start from scratch. Should be easy I figured :) (backed up all the critical stuff - nodes etc)

So I unplugged my NUC from its cupboard and plugged it in to my work station dock via USB-C to give it immediate access to Ethernet/monitors for the install (suspect my first mistake). The install went fine - I chose to set a static IP of 168.192.1.90 in the install dialogue which was the previous static for my setup. I checked I could SSH in to the machine, and the web interface was accessible at 168.192.1.90:8006 as expected. Great, I'm off I thought.

Unplugged it, put it back in the cupboard where it lived, connected ethernet and.... No network. No SSH, no web interface. The router didn't even register a connection via ethernet.
I have reset routers, tried to find any new device IPs etc with no luck.
So I am assuming that given ethernet was connected via usb-c on setup the network config is wrong perhaps? Can anyone see what has gone wrong? I'm not able to make sense of the various indepth articles I have found detailing NIC and network configs.

No connection when trying to ping 1.1.1.1

IP R gives
default via 192.168.1.1 dev vmbr0 proto kernel onlink linkdown
192.168.1.0/24 dev vmbr0 proto kernal scope link src 192.160.1.90 linkdown

/etc/network/interfaces:
auto lo
iface lo inet loopback

iface enx644bf02b0b57 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.1.90/24
gateway 192.168.1.1
bridge-ports enx644bf02b0b57
bridge-stp off
bridge-fd 0

iface enp88s0 inet manual

iface wlo1 inet manual
 
Argh - solved it!

Just had to persist with the research. For anyone else with similar problems:
enx644bf02b0b57 was my virtual NIC via USB-c. I just had to switch out the bridge to work with enp88s0 instead (the ethernet connection).
 

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