1 files changed, 105 insertions, 0 deletions
diff --git a/ppp/ip-down.ipv6to4 b/ppp/ip-down.ipv6to4
new file mode 100644
index 00000000..2f481708
--- /dev/null
+++ b/ppp/ip-down.ipv6to4
@@ -0,0 +1,105 @@
+#!/bin/sh
+#
+# ip-down.ipv6to4
+#
+#
+# Taken from:
+# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de>
+#
+# Version 2001-05-07
+#
+# Calling parameters:
+#  $1: interface name
+#
+# Called by (mostly) /etc/ppp/ip-down.local
+#  like: /etc/ppp/ip-down.ipv6to4 $1 >>/var/log/ppp-ipv6to4.log 2>&1
+#
+# Uses following information from /etc/sysconfig/network:
+#  NETWORKING_IPV6=yes|no: controls IPv6 initialization (global setting)
+#
+# Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1:
+#  IPV6TO4INIT=yes|no: controls configuration
+#  IPV6TO4_RELAY=IPv4addr: remote IPv6to4 relay address
+#  IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64": information to setup local subnetting
+#  IPV6TO4_CONTROL_RADVD=yes|no: controls radvd triggering
+#  IPV6TO4_RADVD_PIDFILE=file: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid"
+#
+
+
+if [ -z "$1" ]; then
+  	echo $"Arg 1 is empty but should contain interface name - skip IPv6to4 initialization" >/dev/stderr
+	exit 1
+fi
+
+# Get global network configuration
+. /etc/sysconfig/network 
+
+# Source IPv4 helper functions
+cd /etc/sysconfig/network-scripts
+. network-functions 
+
+CONFIG=$1
+[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
+source_config                                                                   
+
+# Test if IPv6 is globally enabled
+if [ ! "${NETWORKING_IPV6}" = "yes" ]; then
+        # Global IPv6 switch not enabled, end now
+        exit 0
+fi
+
+if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then
+	exit 1
+fi
+
+. /etc/sysconfig/network-scripts/network-functions-ipv6
+
+# Run basic IPv6 test, if not ok, skip IPv6 initialization
+test_ipv6 testonly || exit 0
+
+
+# Shutdown of 6to4, if configured
+valid6to4config="yes"
+if [ -z "$IPV6TO4_RELAY" ]; then
+	valid6to4config="no"
+fi
+if [ "$valid6to4config" = "yes" ]; then
+	# Beep
+	if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2666; else echo -en "\a" >/dev/console; fi
+
+	if [ "$IPV6TO4_CONTROL_RADVD" = "yes" ]; then
+		# stop RADVD from distributing no longer usable 6to4 prefixes
+		if [ -z "$IPV6TO4_RADVD_PIDFILE" ]; then
+			# Take default
+			IPV6TO4_RADVD_PIDFILE="/var/run/radvd/radvd.pid"
+		fi
+		# Send SIGHUP to radvd
+		if [ -f "$IPV6TO4_RADVD_PIDFILE" ]; then
+			pid="`cat $IPV6TO4_RADVD_PIDFILE`"
+			if [ ! -z "$pid" ]; then
+				#  still waiting for feature enabling: stopping distribution of prefixes in RADVD....		
+				# kill -SOMETHING $pid
+				false
+			else
+				false
+			fi
+		fi
+	fi
+
+	# Delete all static IPv6to4 routes to relay
+	ifdown_ipv6_route_all sit0 ::$IPV6TO4_RELAY
+
+	if [ ! -z "$IPV6TO4_ROUTING" ]; then
+		# Delete routes to local networks
+		for devsuf in $IPV6TO4_ROUTING; do
+			dev="`echo $devsuf | awk -F- '{ print $1 }'`"
+			ifdown_ipv6_route_all $dev ::
+		done
+	fi
+
+	# Delete all configured 6to4 address
+	ifdown_ipv6to4_all sit0 
+
+	# Beep
+	if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2000; else echo -en "\a" >/dev/console; fi
+fi