VirtualBox 4.0.8, pfSense 2.0-RC3 and WiFi bridging.

  • I've was testing out RC3 on VirtualBox today and am having some trouble bridging two interfaces together.  I followed these instructions:,20917.0.html

    It works for me when I use a physical machine, but when I try to do the same on my VirtualBox install it doesn't work.  Devices connected to the bridged interfaces can get a DHCP assigned IP, but all other traffic gets dropped silently.  I tried setting my virtual network cards to use promiscuous mode..

    ..but it didn't help.  I can make it work another way, but would appreciate some feedback about how I've done it.  This is not a mission critical machine and I mainly want to move it onto my virtual machine server so I can get rid of the old dedicated hardware I've been using.  Here is my setup:

    I have 3 NICs in my host machine:

    eth0 - connected to my LAN
    eth1 - connected to my WAN (ISP)
    wlan0 - atheros based wireless card (AR2413 using ath5k driver)

    None of the above are assigned IP addresses.  On my host machine I'm using 'hostapd' and configuring my wireless card as a wireless access point.  I installed 'bridge-utils' and used it to create a new interface:

    br0 - bridges wlan0 and eth0 (LAN and WIFI)
    virtual NIC em0 - bridged to eth1 - assigned to WAN
    virtual NIC em1 - bridged to br0 - assigned to LAN

    So, my question is.. if I bridge those NICs on the host and let my pfSense virtual machine treat them like a single interface, am I going to break anything non-obvious?  I know I won't be able to filter the bridged traffic, but I don't want to anyway.  So far it seems to be working pretty decently.

  • Hello!

    I had the same problem this week.
    It´s not PfSense fault.

    Virtualbox has made changes in v4.0.6
    Check this link out, you have to set promiscuos mode for the PfSense internal nics.

    This is what I did for my LAN and OPT interface. My 3 nics are Intel E1000 nics.
    (VBoxManage setextradata [VM_NAME] "VBoxInternal/Devices/[e1000/pcnet]]/[slot]/LUN#0/Config/IfPolicyPromisc" "allow-all")
    For ex:
    VBoxManage setextradata VM_namehere "VBoxInternal/Devices/e1000/1/LUN#0/Config/IfPolicyPromisc" "allow-all"
    VBoxManage setextradata VM_namehere "VBoxInternal/Devices/e1000/2/LUN#0/Config/IfPolicyPromisc" "allow-all"

    Then it worked for me.


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