Comment 5 for bug 125302

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Yuki Izumi (kivikakk) wrote : Re: kvm-ifup fails to bring up tap0 in feisty

I had a similar problem (Gutsy/AMD64, 2.6.22-14-generic, kvm 1:16-1ubuntu2), in that tap0 wasn't visible (ifconfig -a) on my host, and kvm reported "can't add tap0 to bridge eth1: Operation not supported" when starting.

However, after my host finished booting and everything network related had finished initializing, tap0 had appeared, and I can configure them both to communicate without issue.