[SOLVED] WIFI dongle setup

[Kubro]

Hi! First of all, I'm new to all this. Now, I want to setup Proxmox VE via a WIFI USB dongle (I know it's not recommended).

I have managed to set up my Proxmox and my WIFI dongle. (Took me a while and lots of trial and error.) I can now access the Proxmox UI via another laptop on the same network and I can ping google.com from the Proxmox terminal.

However, I wanted to set up a VM, but I can't seem to pass the connection to it. I tried a Home Assistant VM and a Debian one, but both could not connect to the internet or ping other VMs/the host (Network is unreachable and Destination Host Unreachable).

I tried many things (not sure if I did them all right), but nothing seems to work. Can anyone help me out?

This is my /etc/network/interfaces:

auto lo
iface lo inet loopback

iface enp1s0 inet manual

auto wlx1cbfce1dbf8f
iface wlx1cbfce1dbf8f inet static
        wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
        address 192.168.0.10/24
        gateway 192.168.0.1
        wpa-essid my_ssid
        wpa-psk my_psk

auto vmbr0
iface vmbr0 inet static
        address 192.168.137.10/24
        bridge-stp off
        bridge-fd 0
        bridge-ports none

        post-up   echo 1 > /proc/sys/net/ipv4/ip_forward
        post-up   iptables -t nat -A POSTROUTING -s '192.168.137.0/24' -o wlx1cbfce1dbf8f -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s '192.168.137.0/24' -o wlx1cbfce1dbf8f -j MASQUERADE

        post-up   iptables -t raw -I PREROUTING -i fwbr+ -j CT --zone 1
        post-down iptables -t raw -D PREROUTING -i fwbr+ -j CT --zone 1

source /etc/network/interfaces.d/*

 

[Vlodek]

Your configuration looks correct.

Like here:

https://forum.proxmox.com/threads/using-wifi-instead-of-ethernet.56691/post-534013

Is the VM network adapter assigned to vmbr0?

How does a VM have a gateway and DNS set?

 

[Kubro]

Yes, I think so.

ip route on my Debian VM gives me:

default via 192.168.137.1 dev ens18 onlink
192.168.137.0/24 dev ens18 proto kernel scope link src 192.168.137.12

ip route on my Home Assistant VM gives me:

172.30.32.0/23 dev hassio proto kernel scope link src 172.30.32.1
172.30.232.0/23 dev docker0 proto kernel scope link src 172.30.232.1

In the Hardware tab in Proxmox, I can see vmbr0 selected on both VMs.

 

[Vlodek]

The gateway is incorrectly set on Debian VM.

Your setting is 192.168.137.1 and it should be 192.168.137.10.

Home Assistant VM should be on the 192.168.137.0/24 network.

 

[Kubro]

Oh! Yes, that was it, thank you! I've changed them like this:

Debian:

default via 192.168.137.10 dev ens18 onlink
192.168.137.0/24 dev ens18 proto kernel scope link src 192.168.137.12

Home Assistant:

default via 192.168.137.10 dev enp0s18 proto static metric 100
172.30.32.0/23 dev hassio proto kernel scope link src 172.30.32.1
172.30.232.0/23 dev docker0 proto kernel scope link src 172.30.232.1
192.168.137.0/24 dev enp0s18 proto kernel scope link src 192.168.137.11 metric 100

Now I can ping google.com from both the VMs!

However, I can not access the Home Assistant UI. When going to 192.168.137.11:8123 or homeassistant.local:8123 it times out. (I have set Home Assistants address to 192.168.137.11/24 and it is shown on the welcome screen)

 

[Vlodek]

If the laptop from which you connect to PVE has Windows,
you should add a route to the vmbr0 192.168.137.0/24 network via PVE 192.168.0.10
by issuing the command in cmd with Administrator privileges elevated:

route -p add 192.168.137.0 mask 255.255.255.0 192.168.0.10

the -p switch will save the route permanently and will be available after restarting the laptop.

Please take a look at

https://forum.proxmox.com/threads/setup-proxmox-network-with-wifi-interface-and-vpn.143145/

 

[Kubro]

I did not know that, thank you!

Everything seems to work now. Thank you so much for helping me out!