Bridge virtual machines out WLAN interface

Posted by Thomas on Server Fault See other posts from Server Fault or by Thomas
Published on 2009-09-16T14:17:42Z Indexed on 2012/03/25 11:32 UTC
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Filed under:

linux

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kvm-virtualization

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wlan

It seems that my wlan card (intel 5100 AGN) firmware doesn't allow "spoofing" MAC addresses. This has the side effect of destroying the capability to bridge out my virtual machines on that interface. Apparently this is a common thing on wlan cards.

I can see the incoming traffic just fine in my virtual machines, but their DHCP queries don't get bridged out of the WLAN card. It works perfectly well when using the wired ethernet port.

Is there a workaround for this? MAC-NAT or something?

I don't want to route my virtual machines out to the Internet because I don't want my host OS to even have an IP address.

I'm using Linux and KVM for virtualization.

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