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#!/bin/sh
[ -x /usr/sbin/brctl ] || exit 0
case "$IF_BRIDGE_PORTS" in
"")
exit 0
;;
none)
INTERFACES=""
;;
*)
INTERFACES="$IF_BRIDGE_PORTS"
;;
esac
brctl addbr $IFACE || exit 1
for IF in $INTERFACES; do
if ! grep -q $IF /proc/net/dev; then
echo "Error: interface '$IF' does not exist!"
brctl delbr $IFACE
exit 1
fi
brctl addif $IFACE $IF
ip link set up dev $IF
done
exit 0
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