Package: qemu-kvm Version: 0.14.0+dfsg-1~tls Using 2.6.38 it seems that "ip route ls" lists several default route devices, e.g.
10.42.100.0/24 dev br0 proto kernel scope link src 10.42.100.3 10.42.100.0/24 dev eth0 proto kernel scope link src 10.42.100.3 default via 10.42.100.1 dev eth0 default via 10.42.100.1 dev br0 This breaks /etc/kvm/kvm-ifup. eth0 is not a bridge, and br0 is never tried. Attached you can find a better version. Regards Harri
#! /bin/sh
# Script to bring a network (tap) device for qemu-kvm up
# The idea is to add the tap device to the same bridge
# as we have default routing to.
switch=$(ip route ls | \
awk '/^default / {
for(i=0;i<NF;i++) { if ($i == "dev") { print $(i+1); } }
}'
)
/sbin/ifconfig $1 0.0.0.0 up
# only add the interface to default-route bridge if we
# have such interface (with default route) and if that
# interface is actually a bridge.
for switch in $switch; do
if [ -n "$switch" -a -d /sys/class/net/$switch/bridge/. ]; then
/usr/sbin/brctl addif $switch $1 || :
break
fi
done
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