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File qemu-ifup of Package qemu

#!/bin/sh

# sample bridge qemu-ifup script

echo 'configuring qemu network with bridge for' $*

# If bridge is not specified, try device with default route.
bridge=$2
if [ -z "$bridge" ]; then
    bridge=$(/usr/sbin/ip route list | /usr/bin/awk '/^default / { print $5 }')
fi

# Exit if $bridge is not a bridge. Exit with 0 status
# so qemu process is not terminated and provide message
# about failure to setup network.
if [ ! -e "/sys/class/net/${bridge}/bridge" ]
then
   echo "WARNING! ${bridge} is not a bridge.  qemu-ifup exiting.  VM may not have a functioning networking stack."
   exit 0
fi

/usr/sbin/ip link set $1 up
/usr/sbin/ip link set $1 master $bridge || true