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#! /bin/bash
#
# network       Bring up/down networking
#
# chkconfig: - 10 90
# description: Activates/Deactivates all network interfaces configured to \
#              start at boot time.
#
### BEGIN INIT INFO
# Provides: $network
# Should-Start: iptables ip6tables NetworkManager-wait-online NetworkManager $network-pre
# Short-Description: Bring up/down networking
# Description: Bring up/down networking
### END INIT INFO

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

if [ ! -f /etc/sysconfig/network ]; then
    exit 6
fi

. /etc/sysconfig/network

if [ -f /etc/sysconfig/pcmcia ]; then
    . /etc/sysconfig/pcmcia
fi

# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 6

# if the ip configuration utility isn't around we can't function.
[ -x /sbin/ip ] || exit 1

CWD=$(pwd)
cd /etc/sysconfig/network-scripts

. ./network-functions

# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=$(ls ifcfg-* | \
        LC_ALL=C sed -e "$__sed_discard_ignored_files" \
               -e '/$ifcfg-lo$\|:\|ifcfg-.*-range$/d' \
               -e '{ s/^ifcfg-//g;s/[0-9]/ &/}' | \
        LC_ALL=C sort -k 1,1 -k 2n | \
        LC_ALL=C sed 's/ //')
rc=0

if ! [ -f /etc/sysconfig/disable-deprecation-warnings ]; then
    net_log $"You are using 'network' service provided by 'network-scripts', which are now deprecated." warning network >&2
    net_log $"'network-scripts' will be removed in one of the next major releases of RHEL." warning network >&2
    net_log $"It is advised to switch to 'NetworkManager' instead for network management." warning network >&2

# This disables additional warnings during the boot process:
    export DEPRECATION_WARNING_ISSUED='true'
fi

# See how we were called.
case "$1" in
start)
    [ "$EUID" != "0" ] && exit 4
    rc=0
    # IPv6 hook (pre IPv4 start)
    if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
        /etc/sysconfig/network-scripts/init.ipv6-global start pre
    fi

apply_sysctl

#tell NM to reload its configuration
    if [ "$(LANG=C nmcli -t --fields running general status 2>/dev/null)" = "running" ]; then
        nmcli connection reload
    fi

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

case "$VLAN" in
    yes)
        if [ ! -d /proc/net/vlan ] && ! modprobe 8021q >/dev/null 2>&1 ; then
            net_log $"No 802.1Q VLAN support available in kernel."
        fi
        ;;
    esac

vlaninterfaces=""
    vpninterfaces=""
    xdslinterfaces=""
    bridgeinterfaces=""

# bring up all other interfaces configured to come up at boot time
    for i in $interfaces; do
        unset DEVICE TYPE SLAVE NM_CONTROLLED
        eval $(LANG=C grep -F "DEVICE=" ifcfg-$i)
        eval $(LANG=C grep -F "TYPE=" ifcfg-$i)
        eval $(LANG=C grep -F "SLAVE=" ifcfg-$i)
        eval $(LANG=C grep -F "NM_CONTROLLED=" ifcfg-$i)

if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

if [ "$SLAVE" = "yes" ] && ( ! is_nm_running || is_false $NM_CONTROLLED ) ; then
            continue
        fi

if [ "${DEVICE##cipcb}" != "$DEVICE" ] ; then
            vpninterfaces="$vpninterfaces $i"
            continue
        fi
        if [ "$TYPE" = "xDSL"  -o  "$TYPE" = "Modem" ]; then
            xdslinterfaces="$xdslinterfaces $i"
            continue
        fi

if [ "$TYPE" = "Bridge" ]; then
            bridgeinterfaces="$bridgeinterfaces $i"
            continue
        fi
        if [ "$TYPE" = "IPSEC" ] || [ "$TYPE" = "IPIP" ] || [ "$TYPE" = "GRE" ]; then
            vpninterfaces="$vpninterfaces $i"
            continue
        fi

if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
            vlaninterfaces="$vlaninterfaces $i"
            continue
        fi

if ( . ./ifcfg-"$i" ; is_false "$ONBOOT" ) ; then
            # this loads the module, to preserve ordering
            is_available $i
            continue
        fi
        action $"Bringing up interface $i: " ./ifup $i boot
        [ $? -ne 0 ] && rc=1
    done

# Bring up xDSL and VPN interfaces
    for i in $vlaninterfaces $bridgeinterfaces $xdslinterfaces $vpninterfaces ; do
        if ( . ./ifcfg-"$i" ; ! is_false "$ONBOOT" ) ; then
            action $"Bringing up interface $i: " ./ifup $i boot
            [ $? -ne 0 ] && rc=1
        fi
    done

# Add non interface-specific static-routes.
    if [ -f /etc/sysconfig/static-routes ]; then
        if [ -x /sbin/route ]; then
            grep "^any" /etc/sysconfig/static-routes | while read ignore args ; do
                /sbin/route add -$args
            done
        else
            net_log $"Legacy static-route support not available: /sbin/route not found"
        fi
    fi

# IPv6 hook (post IPv4 start)
    if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
        /etc/sysconfig/network-scripts/init.ipv6-global start post
    fi
    # Run this again to catch any interface-specific actions
    apply_sysctl

touch /var/lock/subsys/network

[ -n "${NETWORKDELAY}" ] && /bin/sleep ${NETWORKDELAY}
    ;;
stop)
    [ "$EUID" != "0" ] && exit 4
    # Don't shut the network down if root or /usr is on NFS or a network
    # block device.
    if systemctl show --property=RequiredBy -- -.mount usr.mount | grep -q 'remote-fs.target' ; then
        net_log $"rootfs or /usr is on network filesystem, leaving network up"
        exit 1
    fi

# Don't shut the network down when shutting down the system if configured
    # as such in sysconfig
    if is_false "$IFDOWN_ON_SHUTDOWN"; then
      if systemctl is-system-running | grep -q 'stopping'; then
        net_log $"system is shutting down, leaving interfaces up as requested" info
        exit 0
      fi
    fi

vlaninterfaces=""
    vpninterfaces=""
    xdslinterfaces=""
    bridgeinterfaces=""
    remaining=""
    rc=0

# get list of bonding, vpn, and xdsl interfaces
    for i in $interfaces; do
        unset DEVICE TYPE
        eval $(LANG=C grep -F "DEVICE=" ifcfg-$i)
        eval $(LANG=C grep -F "TYPE=" ifcfg-$i)

if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

if [ "${DEVICE##cipcb}" != "$DEVICE" ] ; then
            vpninterfaces="$vpninterfaces $i"
            continue
        fi
        if [ "$TYPE" = "IPSEC" ] || [ "$TYPE" = "IPIP" ] || [ "$TYPE" = "GRE" ]; then
            vpninterfaces="$vpninterfaces $i"
            continue
        fi
        if [ "$TYPE" = "Bridge" ]; then
            bridgeinterfaces="$bridgeinterfaces $i"
            continue
        fi
        if [ "$TYPE" = "xDSL"  -o  "$TYPE" = "Modem" ]; then
            xdslinterfaces="$xdslinterfaces $i"
            continue
        fi

if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
            vlaninterfaces="$vlaninterfaces $i"
            continue
        fi
        remaining="$remaining $i"
    done

for i in $vpninterfaces $xdslinterfaces $bridgeinterfaces $vlaninterfaces $remaining; do
        unset DEVICE TYPE
        (. ./ifcfg-$i
        if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

if ! check_device_down $DEVICE; then
            action $"Shutting down interface $i: " ./ifdown $i boot
            [ $? -ne 0 ] && rc=1
        fi
        )
    done

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

sysctl -w net.ipv4.ip_forward=0 > /dev/null 2>&1

# IPv6 hook (post IPv4 stop)
    if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
        /etc/sysconfig/network-scripts/init.ipv6-global stop post
    fi

rm -f /var/lock/subsys/network
    ;;
status)
    echo $"Configured devices:"
    echo lo $interfaces

echo $"Currently active devices:"
    echo $(/sbin/ip -o link show up | awk -F ": " '{ print $2 }')
    ;;
restart|force-reload)
    cd "$CWD"
    $0 stop
    $0 start
    rc=$?
    ;;
*)
    echo $"Usage: $0 {start|stop|status|restart|force-reload}"
    exit 2
esac

exit $rc

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