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114 lines
3.1 KiB
114 lines
3.1 KiB
#!/bin/sh |
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# |
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# ip-down.ipv6to4 |
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# |
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# |
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# Taken from: |
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# (P) & (C) 2000-2005 by Peter Bieringer <pb@bieringer.de> |
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# |
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# You will find more information on the initscripts-ipv6 homepage at |
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# http://www.deepspace6.net/projects/initscripts-ipv6.html |
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# |
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# Version 2005-09-22 |
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# |
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# Calling parameters: |
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# $1: interface name |
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# |
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# Called (mostly) by /etc/ppp/ip-down.local |
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# like: /etc/ppp/ip-down.ipv6to4 $1 >>/var/log/ppp-ipv6to4.log 2>&1 |
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# |
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# Note: this script will *check* whether the existing 6to4 tunnel |
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# was set before by using "ip-up.ipv6to4" comparing IPv4 address |
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# of device with the generated 6to4 prefix |
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# |
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# Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1: |
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# IPV6TO4INIT=yes|no: controls configuration |
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# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup additional interfaces |
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# |
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# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering |
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# IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" |
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# IPV6_RADVD_TRIGGER_ACTION=startstop|reload|restart|SIGHUP: how to trigger radvd (optional, default is SIGHUP) |
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# |
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if [ -z "$1" ]; then |
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echo $"Argument 1 is empty but should contain interface name - skip IPv6to4 initialization" |
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exit 1 |
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fi |
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# Get global network configuration |
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. /etc/sysconfig/network |
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# Source IPv4 helper functions |
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cd /etc/sysconfig/network-scripts |
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. ./network-functions |
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CONFIG=$1 |
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[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG |
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source_config |
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# IPv6 don't need aliases anymore, config is skipped |
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REALDEVICE=${DEVICE%%:*} |
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[ "$DEVICE" != "$REALDEVICE" ] && exit 0 |
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if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then |
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exit 1 |
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fi |
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. /etc/sysconfig/network-scripts/network-functions-ipv6 |
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# Run basic IPv6 test, if not ok, skip IPv6 initialization |
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ipv6_test testonly || exit 0 |
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# Test status of ppp device |
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ipv6_test_device_status $DEVICE |
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if [ $? != 0 -a $? != 11 ]; then |
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# device doesn't exist or other problem occurs |
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exit 1 |
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fi |
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# Test status of tun6to4 device |
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ipv6_test_device_status tun6to4 |
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if [ $? = 0 -o $? = 11 ]; then |
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# Device exists |
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valid6to4config="yes" |
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# Get IPv4 address from interface |
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ipv4addr="$(ipv6_get_ipv4addr_of_device $DEVICE)" |
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if [ -z "$ipv4addr" ]; then |
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# Has no IPv4 address |
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valid6to4config="no" |
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fi |
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# Get local IPv4 address of dedicated tunnel |
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ipv4addr6to4local="$(ipv6_get_ipv4addr_of_tunnel tun6to4 local)" |
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# IPv6to4 not enabled on this interface? |
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if [ $IPV6TO4INIT != "yes" ]; then |
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# Check against configured 6to4 tunnel to see if this interface was regardless used before |
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if [ "$ipv4addr" != "$ipv4addr6to4local" ]; then |
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# IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup |
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valid6to4config="no" |
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fi |
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fi |
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fi |
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if [ "$valid6to4config" = "yes" ]; then |
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if [ "$IPV6_CONTROL_RADVD" = "yes" ]; then |
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# Control running radvd |
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ipv6_trigger_radvd down "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE |
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fi |
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if [ -n "$IPV6TO4_ROUTING" ]; then |
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# Delete routes to local networks |
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for devsuf in $IPV6TO4_ROUTING; do |
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dev="${devsuf%%-*}" |
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ipv6_cleanup_6to4_device $dev |
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done |
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fi |
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# Delete all configured 6to4 address |
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ipv6_cleanup_6to4_tunnels tun6to4 |
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fi
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