pve7. 2-3 can use wifi bridge to vm?

T

tangz

New Member
Jun 9, 2022
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i want vm create a nic bridge to wifi port, but it can not be configed.

in pve web console
1654752481017.png
and wlp41s0 cann't be edit

when i create new vm
1654752596915.png
bridge cann't to select, no data in it

lspci
29:00.0 Network controller: Intel Corporation Device 2725 (rev 1a) <--- wifi port intel ax210
2a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
root@pve:~# lspci -nnk |grep -i net
29:00.0 Network controller [0280]: Intel Corporation Device [8086:2725] (rev 1a)
2a:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)

if i want used enp42s0 , need add rtl8125 to nic_model_list. ???
if i want used enp41s0, need add 2725 to nic_model_list ???


it my first time to use pve, can anyone help me??? and sorry, my english is not good
 
MarvinE said:
I think you have to create a vm bridge under System -> Network (on the host) with the bridge ports "wlp41s0" than it should work.
Click to expand...
is means config below:

iface wlp41s0 inet manual
auto vmbr1
iface vmbr1 inet static
address xxxx/xx
gateway xxxx
wpa-conf /etc/wpa.conf

then bridge vport to vmbr1 when create vm ???
 
Last edited:
I would try to leave wlp41s0 as it is. And would create an empty bridge.

Code: 
auto vmbr1
iface vmbr1 inet manual
    bridge-ports wlp41s0
    bridge-stp off
    bridge-fd 0

Than you can add "vmbr1" as bridge in your VM.
 
MarvinE said:
I would try to leave wlp41s0 as it is. And would create an empty bridge.

Code: 
auto vmbr1
iface vmbr1 inet manual
    bridge-ports wlp41s0
    bridge-stp off
    bridge-fd 0

Than you can add "vmbr1" as bridge in your VM.
Click to expand...
vm1 bridge to wlp41s0, but can't used to vm
 
Hi everybody,

I´ve just started some weeeks ago with Proxmox. Amazing tool indeed! The thing is that I´ve been reading and reading all through these forums anda sometimes I figured out that it was possible to bridge a Wifi connection to the the VMs but, other times not.

I have bridged Vmbr1 to the ip range of my wireless adapter a configured it as you said but, when I started the VM (a Linux one) it says that "wire connection error".

Furthermore, I belive that most wifi chipsets don´t support "bridging" feature. I´m not sure of that...
Hasn´t anybody in these amazing forum done it? I´m sure that yes.
There should be a way to do it... perhaps not bridging directly but through other methods.
My purpose is just for labs. Nothing proffesional,

Thankss!!
 
eskamon said:
The thing is that I´ve been reading and reading all through these forums anda sometimes I figured out that it was possible to bridge a Wifi connection to the the VMs but, other times not.
Click to expand...
It is usually not possible to bridge a Wifi interface (or at least not in a way that VMs/LXCs could access the internet) becasue the Wifi AP will drop the packets of bridged virtual NICs. You have to NAT between a bridge and a wifi interface so the Wifi AP is always seeing the single MAC of the Wifi interface and not the MACs of the virtual NICs of the VMs/LXCs. Basically turning your PVE host into a router.

See the Wiki why not to use Wifi and how to work around the bridging problem: https://pve.proxmox.com/wiki/WLAN
 
Last edited:
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Dunuin said:
It is usually not possible to bridge a Wifi interface (or at least not in a way that VMs/LXCs could access the internet) becasue the Wifi AP will drop the packets of bridged virtual NICs. You have to NAT between a bridge and a wifi interface so the Wifi AP is always seeing the single MAC of the Wifi interface and not the MACs of the virtual NICs of the VMs/LXCs. Basically turning your PVE host into a router.

See the Wiki why not to use Wifi and how to work around the bridging problem: https://pve.proxmox.com/wiki/WLAN
Click to expand...
Thanks for your reply!
I´ve been struggling whith the info of that link about "NATing" bridge and Wifi AP but with no result. My VM is a Linux Mint and always show as "without connection". I have adapted the commands to my IPs and MAC from my bridge and VM but... nothing happends. My Proxmox has internet connection but the VM not. There is somthing taht I´m doing wrong... Help me please
 
Dunuin said:
Would be useful if you could show your network config. Should be similar to this: https://pve.proxmox.com/wiki/Network_Configuration#sysadmin_network_masquerading
Click to expand...
Ok! Let´s go with it:

Code: 
auto lo
iface lo inet loopback

auto wlp3s0b1
iface wlp3s0b1 inet dhcp
        wpa-essid "EarthQuake"
        wpa-psk "xxx"

#iface enp2s0f0 inet manual

auto vmbr1
iface vmbr1 inet manual
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        pre-up iwconfig wlp3s0b1 essid "EarthQuake"
        bridge_hw b8:76:3f:2c:9d:a4

source /etc/network/interfaces.d/*

The thing is that, following the link you share two replies ago, I use ebtables instead of iptables.

https://wiki.debian.org/BridgeNetworkConnections#Bridging_with_a_wireless_NIC

On Linux Mint VM, same interfaces file:

Code: 
auto ens18
iface ens18 inet static
    address 192.168.0.100/24
    gateway 192.168.0.1
    dns-nameserver 8.8.8.8
source /etc/network/interfaces.d/*

ebtables -t nat -L

Code: 
root@vulkano:~# ebtables -t nat -L
Bridge table: nat

Bridge chain: PREROUTING, entries: 2, policy: ACCEPT
-p IPv4 -i wlp3s0b1 --ip-dst 192.168.0.100 -j dnat --to-dst bc:24:11:bc:90:7c --dnat-target ACCEPT
-p ARP -i wlp3s0b1 --arp-ip-dst 192.168.0.100 -j dnat --to-dst bc:24:11:bc:90:7c --dnat-target ACCEPT

Bridge chain: OUTPUT, entries: 0, policy: ACCEPT

Bridge chain: POSTROUTING, entries: 1, policy: ACCEPT
-o wlp3s0b1 -j snat --to-src 06:36:aa:cb:54:b4 --snat-arp --snat-target ACCEPT

Something else??
Should I do with iptables?

Thanks @Dunuin
 
Dunuin said:
Would be useful if you could show your network config. Should be similar to this: https://pve.proxmox.com/wiki/Network_Configuration#sysadmin_network_masquerading
Click to expand...
I have changed everything. Deleted all related to ebtables and reconfigured as the example of your link. Now, my network config is like this:

Code: 
auto lo
iface lo inet loopback

auto wlp3s0b1
iface wlp3s0b1 inet dhcp
        wpa-essid "EarthQuake"
        wpa-psk "01032016SuperJon"

#iface enp2s0f0 inet manual

auto vmbr1
iface vmbr1 inet static
        address 10.10.10.1/24
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        pre-up iwconfig wlp3s0b1 essid "EarthQuake"
        bridge_hw b8:76:3f:2c:9d:a4
        post-up echo 1 > /proc/sys/net/ipv4/ip_forward
        post-up iptables -t nat -A POSTROUTING -s 10.10.10.0/24 -o wlp3s0b1 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s 10.10.10.0/24 -o wlp3s0b1 -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/*
 
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