Hello,

I am on Gutsy. The original complaint is likely wrong, in that executing
ifconfig tap0 0.0.0.0 up of course won't work, because tap0 will be
deleted again after the failure.

But /etc/kvm/kvm-ifup script is also most likely wrong, because it
doesn't give a bridge to brctl, but instead the "$switch", which is
supposed to be the device with the default router I take. That's my
wireless in my case, and far from a bridge.

I tried creating a bridge inside the script and addif the both $switch
and $1 (tap0). It seems to work insofar as I can see in tcpdump my
packets, for which the WLAN likely will have no friendly words.

Can you clarify, if and where the bridge should be created? tap0 is no
bridge. And can you provide a means to say where to bridge to? I would
be perfectly happy to bridge to lo device. My only goal is to ssh into
the virtual machine from the local machine, but so far I have no
succeeded.

-- 
kvm-ifup fails to bring up tap0 in feisty
https://bugs.launchpad.net/bugs/125302
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