/usr/bin/qemu-ifup is in qemu-common 1.0+noroms-0ubuntu13.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | #!/bin/sh
nic=$1
if [ -f /etc/default/qemu-kvm ]; then
. /etc/default/qemu-kvm
fi
if [ -z "$TAPBR" ]; then
switch=$(ip route list | awk '/^default / { print $5 }')
if [ ! -d "/sys/class/net/${switch}/bridge" ]; then
switch=virbr0
fi
else
switch=$TAPBR
fi
ifconfig $nic 0.0.0.0 up
brctl addif ${switch} $nic
|