#! /bin/bash
#
# network       Bring up/down networking
#
# chkconfig: 2345 10 90
# description: Activates/Deactivates all network interfaces configured to \
#              start at boot time.
#
### BEGIN INIT INFO
# Provides: $network
### END INIT INFO

# Source function library.
. /etc/init.d/functions

# Network configs
BRIDGE_INTERFACE=br0
BRIDGE_SLAVES="eth0 eth1"
BRIDGE_IP=10.10.11.235
BRIDGE_NETMASK=255.255.255.0
BRIDGE_DEFAULT_GW=10.10.11.1
BRIDGE_STP_STATUS=on


# Don't edit anything below this line
RBRIDGE_SLAVES=""
# Reverse list for un-loading; don't change
for x in $BRIDGE_SLAVES; do
    RBRIDGE_SLAVES="$x $RBRIDGE_SLAVES"
done

cd /etc/sysconfig/network-scripts

. network-functions

case "$1" in
    start)
        action $"Setting network parameters: " sysctl -e -p /etc/sysctl.conf

        # bring up loopback interface
        action $"Bringing up loopback interface: " ifup ifcfg-lo

	for i in $BRIDGE_SLAVES
	do
		action $"Bringin down $i: " ifconfig $i down
		action $"Nulling $i: " ifconfig $i 0.0.0.0
	done

	action $"Setting up bridge $BRIDGE_INTERFACE:" brctl addbr $BRIDGE_INTERFACE
	action $"Adjusting stp on $BRIDGE_INTERFACE: " brctl stp $BRIDGE_INTERFACE $BRIDGE_STP_STATUS
	
	for i in $BRIDGE_SLAVES
	do
		action $"Adding $i to $BRIDGE_INTERFACE: " brctl addif $BRIDGE_INTERFACE $i
	done

	# echo '1' > /proc/sys/net/ipv4/ip_forward

	action $"Setting up $BRIDGE_INTERFACE IP: " ifconfig $BRIDGE_INTERFACE $BRIDGE_IP netmask $BRIDGE_NETMASK up
	action $"Adding default gateway to route: " route add default gw $BRIDGE_DEFAULT_GW
    ;;
    stop)
        for i in $BRIDGE_SLAVES
        do
                action $"Deleting interface $i from $BRIDGE_INTERFACE: "brctl delif $BRIDGE_INTERFACE $i
		action $"Bringing down $i: " ifconfig $i down
        done

	action $"Bringing down $BRIDGE_INTERFACE: " ifconfig $BRIDGE_INTERFACE down
	action $"Deleting bridge $BRIDGE_INTERFACE: " brctl delbr $BRIDGE_INTERFACE

	# route del default gw

        action $"Shutting down loopback interface: " ./ifdown ifcfg-lo

        if [ -d /proc/sys/net/ipv4 ]; then
          if [ -f /proc/sys/net/ipv4/ip_forward ]; then
                if [ `cat /proc/sys/net/ipv4/ip_forward` != 0 ]; then
                        action $"Disabling IPv4 packet forwarding: " sysctl -w net.ipv4.ip_forward=0
                fi
          fi
          if [ -f /proc/sys/net/ipv4/ip_always_defrag ]; then
                if [ `cat /proc/sys/net/ipv4/ip_always_defrag` != 0 ]; then
                        action $"Disabling IPv4 automatic defragmentation: " sysctl -w net.ipv4.ip_always_defrag=0
                fi
          fi
        fi
    ;;
    *)
		echo $"Usage: $0 {start|stop|status}"
		exit 1
esac

exit 0