LAN turns off after booting

[enx3c]

Hi everybody,

I have a fresh install of PMVE 9 on my refurbished Dell Wyse 4070. The ipv4 LAN port works (keeps blinking) fine in BIOS and while booting. As soon as Proxmox is done booting the LAN-indicator turns off and I can only connect onto the server via my docking-station´s USB-C, but not by LAN cable. With USB-C disconnected I can´t even ping the IP-address. My fresh installs of PMVE 8.4 showed the same behaviour.

Thank you!

***ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: enp1s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether ... brd ff:ff:ff:ff:ff:ff
altname enxf...
3: enx3c...: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vmbr0 state UP group default qlen 1000
link/ether ... brd ff:ff:ff:ff:ff:ff
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether ... brd ff:ff:ff:ff:ff:ff
inet 192.168.... scope global vmbr0
valid_lft forever preferred_lft forever
inet6 ... scope link proto kernel_ll
valid_lft forever preferred_lft forever


***nano /etc/network/interfaces

auto lo
iface lo inet loopback

iface enx3c... inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168....
gateway 192.168....
bridge-ports enx3c...
bridge-stp off
bridge-fd 0

iface enp1s0 inet manual


source /etc/network/interfaces.d/*

 

[maxim.webster]

You LAN device is enp1s0, but your network configuration defines the USB network device enx3c…

Change lines adressing enx3xc (iface enx3c... inet manual and bridge-ports enx3c...) to enp1s0 and reboot.

 

[enx3c]

Thank you so much for the quick and helpful response!

My mistake seems to have been fiddling with the initial PMVE-install-setting by forcing the network-device "enx3c...", because that one showed the "correct" ipv4-address.

Now I did an install with the standard-setting "enp1s0" and it works.