Creating a new image

$ qemu-img create -f qcow2 image.img 20G

Bridged networking

This is what I did to set up bridged networking for my KVM guests:

# vim /etc/network/interfaces

And set my wired interface to manual and define a bridge interface br0 which my KVM guests will use.

iface eth0 inet manual
      post-up ifup br0

iface br0 inet dhcp
      bridge_ports eth0

Starting the KVM guest

Starting the KVM guest by booting from its CDROM using the Debian stable ISO as the CD:

# kvm -net nic,macaddr=00:00:00:00:00:04 \
      -net tap \
      -cdrom /home/torstein/tmp/debian-8.1.0-amd64-netinst.iso \
      -boot d
      -m 1024 \

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