Ian McShane Rotating Header Image

December 13th, 2007:

VMWare Fusion and network bridging

** UPDATED MARCH 12 2010:  I just posted my solution to this problem here **

I’ve had VMWare Fusion running an image of my work laptop, on my Macbook, for nearly three weeks now. I’ve had no problems at all, running over both NAT and via network bridge.

Until this week.

Now, when I try to use the image over network bridge I get the error “The network bridge on device /dev/vmnet0 is not running”. It still works over NAT but i’m perplexed as to where this problem has come from. No software updates, no network config changes, nothing that I can think would affect this at all.

I started to wonder if it was something to do with being assigned a bridged DHCP on my home lan (10.0.0.X), suspending and being brought up on the work lan under a different subnet completely. Maybe something was going majorly wrong with the bridge device.

I couldn’t/can’t find anything logged anywhere other than the error message above in the vmware.log within the VM image folder.

Running the following command restarts all the vmnet related services:

/Library/Application\ Support/VMWare\ Fusion/boot.sh –restart

You’ll need to sudo that command.

I haven’t found anything on the VMWare community forums to indicate that this has been bugged for fix in a later release so i’m still not entirely sure of the cause…