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diff --git a/network-scripts/network-functions-ipv6 b/network-scripts/network-functions-ipv6
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+# network-functions-ipv6
+#
+# Taken from: network-functions-ipv6
+# (P) & (C) 1997-2005 by Peter Bieringer <pb@bieringer.de>
+#
+# You will find more information on the initscripts-ipv6 homepage at
+# http://www.deepspace6.net/projects/initscripts-ipv6.html
+#
+# Version: 2006-08-03
+#
+#
+
+
+##### Test for IPv6 capabilities
+# $1: (optional) testflag: currently supported: "testonly" (do not load a module)
+# return code: 0=ok 2=IPv6 test fails
+ipv6_test() {
+ local fn="ipv6_test"
+
+ local testflag=$1
+
+ if ! [ -f /proc/net/if_inet6 ]; then
+ if [ "$testflag" = "testonly" ]; then
+ return 2
+ else
+ modprobe ipv6
+
+ if ! [ -f /proc/net/if_inet6 ]; then
+ return 2
+ fi
+ fi
+ fi
+
+ if ! [ -d /proc/sys/net/ipv6/conf/ ]; then
+ return 2
+ fi
+
+ return 0
+}
+
+##### Static IPv6 route configuration
+
+# Set static IPv6 route
+# $1: <IPv6 network> : to route
+# $2: <IPv6 gateway> : over which $1 should be routed (if "::", gw will be skipped)
+# $3: [<Interface>] : (optional)
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem adding route
+ipv6_add_route() {
+ local fn="ipv6_add_route"
+
+ local networkipv6=$1
+ local gatewayipv6=$2
+ local device=$3 # maybe empty
+
+ if [ -z "$networkipv6" ]; then
+ net_log $"Missing parameter 'IPv6-network' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$gatewayipv6" ]; then
+ net_log $"Missing parameter 'IPv6-gateway' (arg 2)" err $fn
+ return 1
+ fi
+
+ ipv6_test || return 2
+
+ ipv6_test_ipv6_addr_valid $networkipv6 || return 2
+ ipv6_test_ipv6_addr_valid $gatewayipv6 || return 2
+
+ if [ -z "$device" ]; then
+ local returntxt="$(/sbin/ip -6 route add $networkipv6 via $gatewayipv6 metric 1 2>&1)"
+ else
+ if [ "$gatewayipv6" = "::" ]; then
+ local returntxt="$(/sbin/ip -6 route add $networkipv6 dev $device metric 1 2>&1)"
+ else
+ local returntxt="$(/sbin/ip -6 route add $networkipv6 via $gatewayipv6 dev $device metric 1 2>&1)"
+ fi
+ fi
+
+ if [ -n "$returntxt" ]; then
+ if echo $returntxt | LC_ALL=C grep -q "File exists"; then
+ # Netlink: "File exists"
+ true
+ elif echo $returntxt | LC_ALL=C grep -q "No route to host"; then
+ # Netlink: "No route to host"
+ net_log $"'No route to host' adding route '$networkipv6' via gateway '$gatewayipv6' through device '$device'" err $fn
+ return 3
+ else
+ net_log $"Unknown error" err $fn
+ return 3
+ fi
+ fi
+
+ return 0
+}
+
+##### automatic tunneling configuration
+
+## Configure automatic tunneling up
+# return code: 0=ok 2=IPv6 test fails 3=major problem
+ipv6_enable_autotunnel() {
+ local fn="ipv6_enable_autotunnel"
+
+ ipv6_test || return 2
+
+ # enable IPv6-over-IPv4 tunnels
+ if ipv6_test_device_status sit0; then
+ true
+ else
+ # bring up basic tunnel device
+ /sbin/ip link set sit0 up
+
+ if ! ipv6_test_device_status sit0; then
+ net_log $"Tunnel device 'sit0' enabling didn't work" err $fn
+ return 3
+ fi
+
+ # Set sysctls proper (regardless "default")
+ /sbin/sysctl -e -w net.ipv6.conf.sit0.forwarding=1 >/dev/null 2>&1
+ /sbin/sysctl -e -w net.ipv6.conf.sit0.accept_ra=0 >/dev/null 2>&1
+ /sbin/sysctl -e -w net.ipv6.conf.sit0.accept_redirects=0 >/dev/null 2>&1
+ fi
+
+ return 0
+}
+
+##### Interface configuration
+
+## Add an IPv6 address for given interface
+# $1: <Interface>
+# $2: <IPv6 address[/prefix]>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_add_addr_on_device() {
+ local fn="ipv6_add_addr_on_device"
+
+ local device=$1
+ local address=$2
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$address" ]; then
+ net_log $"Missing parameter 'IPv6-address' (arg 2)" err $fn
+ return 1
+ fi
+
+ ipv6_test || return 2
+
+ ipv6_test_ipv6_addr_valid $address || return 1
+
+ ipv6_test_device_status $device
+ local result=$?
+
+ if [ "$result" = "0" ]; then
+ true
+ elif [ "$result" != "11" ]; then
+ net_log $"Device '$device' doesn't exist" err $fn
+ return 3
+ else
+ /sbin/ip link set $device up
+
+ if ! ipv6_test_device_status $device; then
+ net_log $"Device '$device' enabling didn't work" err $fn
+ return 3
+ fi
+ fi
+
+ # Extract address parts
+ local prefixlength_implicit="$(echo $address | awk -F/ '{ print $2 }')"
+ local address_implicit="${address%%/*}"
+
+ # Check prefix length and using '64' as default
+ if [ -z "$prefixlength_implicit" ]; then
+ local prefixlength_implicit="64"
+ local address="$address_implicit/$prefixlength_implicit"
+ fi
+
+ /sbin/ip -6 addr replace $address dev $device
+ local result=$?
+
+ if [ $result -eq 2 ]; then
+ return 0
+ elif [ $result -ne 0 ]; then
+ net_log $"Cannot add IPv6 address '$address' on dev '$device'" err $fn
+ return 3
+ fi
+
+ return 0
+}
+
+
+## Remove all IPv6 routes and addresses on given interface (cleanup to prevent kernel crashes)
+# $1: <Interface>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_cleanup_device() {
+ local fn="ipv6_cleanup_device"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ # Remove all IPv6 routes through this device (but not "lo")
+ if [ "$device" != "lo" ]; then
+ /sbin/ip -6 route flush dev $device scope global >/dev/null 2>&1
+ /sbin/ip -6 route flush dev $device scope site >/dev/null 2>&1
+ fi
+
+ # Remove all IPv6 addresses on this interface
+ /sbin/ip -6 addr flush dev $device scope global >/dev/null 2>&1
+ /sbin/ip -6 addr flush dev $device scope site >/dev/null 2>&1
+
+ return 0
+}
+
+
+## Remove all IPv6 6to4 related routes and addresses on given interface
+# $1: <Interface>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_cleanup_6to4_device() {
+ local fn="ipv6_cleanup_6to4_device"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ # Cleanup 6to4 addresses on this device
+ /sbin/ip -6 addr show dev $device scope global permanent | awk '/\<inet6\>/ && $2 ~ /^2002:/ { print $2 }' | while read addr; do
+ /sbin/ip -6 addr del ${addr} dev ${device}
+ done
+
+ # Get all IPv6 routes through given interface related to 6to4 and remove them
+ /sbin/ip -6 route show dev $device | LC_ALL=C grep "^2002:" | while read ipv6net dummy; do
+ /sbin/ip -6 route del $ipv6net dev $device
+ done
+
+ return 0
+}
+
+
+##### Some address test functions
+
+## Test a given IPv6 address for validity
+# $1: <IPv6 address>
+# return code: 0=ok 1=not valid
+ipv6_test_ipv6_addr_valid() {
+ ipcalc -cs6 $1
+}
+
+
+## Test a given IPv4 address for validity
+# $1: <IPv4 address>
+# return code: 0=ok 1=not valid
+ipv6_test_ipv4_addr_valid() {
+ ipcalc -cs4 $1
+}
+
+
+## Test a given IPv4 address for not a private but unicast one
+# $1: <IPv4 address>
+# return code: 0=ok 1=argument error 10=private or not unicast
+ipv6_test_ipv4_addr_global_usable() {
+ local fn="ipv6_test_ipv4_addr_global_usable"
+
+ local testipv4addr_globalusable=$1
+
+
+ if [ -z "$testipv4addr_globalusable" ]; then
+ return 1
+ fi
+
+ # Test for a globally usable IPv4 address now
+ # test 0.0.0.0/8
+ /bin/ipcalc --network $testipv4addr_globalusable 255.0.0.0 | LC_ALL=C grep -q "NETWORK=0\.0\.0\.0" && return 10
+ # test 10.0.0.0/8 (RFC 1918 / private)
+ /bin/ipcalc --network $testipv4addr_globalusable 255.0.0.0 | LC_ALL=C grep -q "NETWORK=10\.0\.0\.0" && return 10
+ # test 127.0.0.0/8 (loopback)
+ /bin/ipcalc --network $testipv4addr_globalusable 255.0.0.0 | LC_ALL=C grep -q "NETWORK=127\.0\.0\.0" && return 10
+ # test 169.254.0.0/16 (APIPA / DHCP link local)
+ /bin/ipcalc --network $testipv4addr_globalusable 255.255.0.0 | LC_ALL=C grep -q "NETWORK=169\.254\.0\.0" && return 10
+ # test 172.16.0.0/12 (RFC 1918 / private)
+ /bin/ipcalc --network $testipv4addr_globalusable 255.240.0.0 | LC_ALL=C grep -q "NETWORK=172\.16\.0\.0" && return 10
+ # test 192.168.0.0/16 (RFC 1918 / private)
+ /bin/ipcalc --network $testipv4addr_globalusable 255.255.0.0 | LC_ALL=C grep -q "NETWORK=192\.168\.0\.0" && return 10
+ # test 224.0.0.0/3 (multicast and reserved, broadcast)
+ /bin/ipcalc --network $testipv4addr_globalusable 224.0.0.0 | LC_ALL=C grep -q "NETWORK=224\.0\.0\.0" && return 10
+
+ return 0
+}
+
+
+## Test a given device for status
+# $1: <Interface>
+# return code: 0=ok 1=argument error 10=not exists 11=down
+ipv6_test_device_status() {
+ local fn="ipv6_test_device_status"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ # Test if device exists
+ if [ ! -d "/sys/class/net/${device}" ]; then
+ # not exists
+ return 10
+ fi
+
+ # Test if device is up
+ if /sbin/ip link show dev $device 2>/dev/null | LC_ALL=C grep -q "UP"; then
+ # up
+ return 0
+ else
+ # down
+ return 11
+ fi
+}
+
+
+## Create 6to4 prefix
+# $1: <IPv4 address>
+# stdout: <6to4address>
+# return code: 0=ok 1=argument error
+ipv6_create_6to4_prefix() {
+ local fn="ipv6_create_6to4_prefix"
+
+ local ipv4addr=$1
+
+ if [ -z "$ipv4addr" ]; then
+ net_log $"Missing parameter 'IPv4 address' (arg 1)" err $fn
+ fi
+
+ local major1="${ipv4addr%%.*}"
+ local minor1="$(echo $ipv4addr | awk -F. '{ print $2 }')"
+ local major2="$(echo $ipv4addr | awk -F. '{ print $3 }')"
+ local minor2="$(echo $ipv4addr | awk -F. '{ print $4 }')"
+
+ if [ -z "$major1" -o -z "$minor1" -o -z "$major2" -o -z "$minor2" ]; then
+ return 1
+ fi
+
+ if [ $major1 -eq 0 ]; then
+ local block1="$(printf "%x" $minor1)"
+ else
+ local block1="$(printf "%x%02x" $major1 $minor1)"
+ fi
+ if [ $major2 -eq 0 ]; then
+ local block2="$(printf "%x" $minor2)"
+ else
+ local block2="$(printf "%x%02x" $major2 $minor2)"
+ fi
+
+ local prefix6to4="2002:$block1:$block2"
+
+ echo "$prefix6to4"
+ return 0
+}
+
+
+## Check and create 6to4 tunnel relay address
+# $1: <IPv4 address|IPv6to4 address>
+# stdout: <tunnel relay address>
+# return code: 0=ok 1=argument error
+ipv6_create_6to4_relay_address() {
+ local fn="ipv6_create_6to4_relay_address"
+
+ local addr=$1
+
+ if [ -z "$addr" ]; then
+ net_log $"Missing parameter 'address' (arg 1)" err $fn
+ return 1
+ fi
+
+ # Check
+ if ipv6_test_ipv4_addr_valid $addr ; then
+ # ok, an IPv4 one
+ if ipv6_test_ipv4_addr_global_usable $addr; then
+ # IPv4 globally usable
+ local ipv6to4_relay="::$addr"
+ else
+ net_log $"Given address '$addr' is not a global IPv4 one (arg 1)" err $fn
+ return 1
+ fi
+ else
+ net_log $"Given address '$addr' is not a valid IPv4 one (arg 1)" err $fn
+ return 1
+ fi
+
+ echo "$ipv6to4_relay"
+
+ return 0
+}
+
+
+##### 6to4 tunneling setup
+
+## Configure 6to4 tunneling up
+# $1: <Interface> : only "tun6to4" is supported
+# $2: <IPv4 address> : global IPv4 address of interface (will be used to generate 6to4 prefix)
+# $3: [<IPv6 suffix>] : for 6to4 prefix (optional, default is "::1")
+# $4: [<MTU>] : MTU of tunnel device (optional, default is automatic)
+# $5: [<IPv4 address>] : local IPv4 address of tunnel interface (required in case of 6to4 behind NAT)
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_add_6to4_tunnel() {
+ local fn="ipv6_add_6to4_tunnel"
+
+ local device=$1
+ local globalipv4=$2
+ local globalipv6to4suffix=$3
+ local mtu=$4
+ local localipv4=$5
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$globalipv4" ]; then
+ net_log $"Missing parameter 'global IPv4 address' (arg 2)" err $fn
+ return 1
+ fi
+
+ # Check device
+ if [ "$device" != "tun6to4" ]; then
+ net_log $"Given device '$device' is not supported (arg 1)" err $fn
+ return 1
+ fi
+
+ # Copy global IPv4 address to local if last one is not given
+ if [ -z "$localipv4" ]; then
+ localipv4="$globalipv4"
+ fi
+
+ ipv6_test || return 2
+
+ # Generate 6to4 address
+ local prefix6to4="$(ipv6_create_6to4_prefix $globalipv4)"
+ if [ $? -ne 0 -o -z "$prefix6to4" ]; then
+ return 3
+ fi
+
+ if [ -z "$globalipv6to4suffix" ]; then
+ local address6to4="${prefix6to4}::1/16"
+ else
+ local address6to4="${prefix6to4}::${globalipv6to4suffix}/16"
+ fi
+
+ ipv6_add_tunnel_device tun6to4 0.0.0.0 $address6to4 $localipv4
+ if [ $? -ne 0 ]; then
+ local retval=3
+ else
+ local retval=0
+ fi
+
+ # Add unspecific unreachable route for local 6to4 address space
+ /sbin/ip route add unreach ${prefix6to4}::/48
+
+ # Set MTU, if given
+ if [ -n "$mtu" ]; then
+ ipv6_set_mtu $device $mtu
+ fi
+
+ return $retval
+}
+
+
+## Configure all 6to4 tunneling down
+# $1: <Interface> : only "tun6to4" is supported
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_cleanup_6to4_tunnels() {
+ local fn="ipv6_cleanup_6to4_tunnels"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ # Check device
+ if [ "$device" != "tun6to4" ]; then
+ net_log $"Given device '$device' is not supported (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ ipv6_del_tunnel_device tun6to4
+
+ # Remove all unspecific unreachable routes for local 6to4 address space
+ /sbin/ip -6 route | LC_ALL=C grep "^unreachable 2002:.*/48 dev lo" | while read token net rest; do
+ /sbin/ip route del unreach $net
+ done
+
+ return 0
+}
+
+
+## Configure 6to4 tunneling down
+# $1: <Interface> : only "tun6to4" is supported
+# $2: <IPv4 address> : global address of local interface
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_del_6to4_tunnel() {
+ local fn="ipv6_del_6to4_tunnel"
+
+ local device=$1
+ local localipv4=$2
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$localipv4" ]; then
+ net_log $"Missing parameter 'local IPv4 address' (arg 2)" err $fn
+ return 1
+ fi
+
+ # Check device
+ if [ "$device" != "tun6to4" ]; then
+ net_log $"Given device '$device' is not supported (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test || return 2
+
+ ipv6_del_tunnel_device tun6to4
+ local retval=$?
+
+ # Remove unspecific unreachable route for local 6to4 address space
+ /sbin/ip route del unreach ${prefix6to4}::/48
+
+ return $retval
+}
+
+
+## Configure a static tunnel device up
+# $1: <Interface>
+# $2: <IPv4 address> : of foreign tunnel
+# $3: [<IPv6 address>] : local one of a P-t-P tunnel (optional)
+# $4: [<IPv4 address>] : local one of tunnel (optional)
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_add_tunnel_device() {
+ local fn="ipv6_add_tunnel_device"
+
+ local device=$1
+ local addressipv4tunnel=$2
+ local addressipv6local=$3
+ local addressipv4tunnellocal=$4
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$addressipv4tunnel" ]; then
+ net_log $"Missing parameter 'IPv4-tunnel address' (arg 2)" err $fn
+ return 1
+ fi
+
+ if [ -z "$addressipv4tunnellocal" ]; then
+ local addressipv4tunnellocal="any"
+ fi
+
+ ipv6_test || return 2
+
+ if ! ipv6_test_device_status $device; then
+ local ttldefault="$(/sbin/sysctl -e net.ipv4.ip_default_ttl | awk '{ print $3 }')"
+ if [ -z "$ttldefault" ]; then
+ local ttldefault=64
+ fi
+
+ # Test whether remote IPv4 address was already applied to another tunnel
+ if [ "$addressipv4tunnel" != "0.0.0.0" -a "$addressipv4tunnel" != "any" ]; then
+ /sbin/ip tunnel show remote $addressipv4tunnel 2>/dev/null | LC_ALL=C grep -w "ipv6/ip" | while IFS=":" read devnew rest; do
+ if [ "$devnew" != "$device" ]; then
+ net_log $"Given remote address '$addressipv4tunnel' on tunnel device '$device' is already configured on device '$devnew'" err $fn
+ return 3
+ fi
+ done
+ fi
+
+ /sbin/ip tunnel add $device mode sit ttl $ttldefault remote $addressipv4tunnel local $addressipv4tunnellocal
+ if [ $? -ne 0 ]; then
+ return 3
+ fi
+
+ # Test, whether "ip tunnel show" reports valid content
+ if ! /sbin/ip tunnel show $device 2>/dev/null | LC_ALL=C grep -q -w "remote"; then
+ net_log $"Tunnel device '$device' creation didn't work" err $fn
+ return 3
+ fi
+
+ /sbin/ip link set $device up
+
+ if ! ipv6_test_device_status $device; then
+ net_log $"Tunnel device '$device' bringing up didn't work" err $fn
+ return 3
+ fi
+
+ # Set sysctls proper (regardless "default")
+ /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.forwarding=1 >/dev/null 2>&1
+ /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_ra=0 >/dev/null 2>&1
+ /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_redirects=0 >/dev/null 2>&1
+
+ if [ -n "$addressipv6local" ]; then
+ # Setup P-t-P address
+ ipv6_add_addr_on_device $device $addressipv6local
+ if [ $? -ne 0 ]; then
+ return 3
+ fi
+ fi
+ else
+ false
+ fi
+
+ return 0
+}
+
+
+## Configure a static tunnel device down
+# $1: <Interface>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_del_tunnel_device() {
+ local fn="ipv6_del_tunnel_device"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ if ipv6_test_device_status $device; then
+ ipv6_cleanup_device $device
+ else
+ if [ "$device" != "sit0" ]; then
+ false
+ fi
+ fi
+
+ if [ "$device" != "sit0" ]; then
+ if /sbin/ip tunnel show $device 2>/dev/null | LC_ALL=C grep -q -w "ipv6/ip"; then
+ /sbin/ip tunnel del $device
+
+ if ipv6_test_device_status $device; then
+ return 3
+ fi
+ else
+ false
+ fi
+ fi
+
+ return 0
+}
+
+
+## Cleanup all dedicated tunnel devices
+ipv6_cleanup_tunnel_devices() {
+ local fn="ipv6_cleanup_tunnel_devices"
+
+ ipv6_test testonly || return 2
+
+ # Find still existing tunnel devices and shutdown and delete them
+
+ /sbin/ip tunnel show | awk -F: '/\<ipv6\/ip\>/ { print $1 }' | while read device; do
+ ipv6_del_tunnel_device $device
+ done
+
+ return 0
+}
+
+
+## Get address of a dedicated tunnel
+# $1: <Interface>
+# $2: local|remote : local or remote address
+# stdout: <IPv4 address> if available
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_get_ipv4addr_of_tunnel() {
+ local fn="ipv6_get_local_ipv4_of_tunnel"
+
+ local device=$1
+ local selection=$2
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$selection" ]; then
+ net_log $"Missing parameter 'selection' (arg 2)" err $fn
+ return 1
+ fi
+ if [ "$selection" != "local" -a "$selection" != "remote" ]; then
+ net_log $"Unsupported selection '$selection' specified (arg 2)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ ipv6_test_device_status $device
+
+ if [ $? != 0 -a $? != 11 ]; then
+ # Device doesn't exist
+ return 3
+ fi
+
+ # Device exists, retrieve address
+ if [ "$selection" = "local" ]; then
+ local tunnel_local_ipv4addr="$(/sbin/ip tunnel show $device | awk '{ print $6 }')"
+ elif [ "$selection" = "remote" ]; then
+ local tunnel_local_ipv4addr="$(/sbin/ip tunnel show $device | awk '{ print $4 }')"
+ fi
+
+ if [ $? != 0 ]; then
+ return 3
+ fi
+
+ if [ "$tunnel_local_ipv4addr" = "any" ]; then
+ local tunnel_local_ipv4addr="0.0.0.0"
+ fi
+
+ echo "$tunnel_local_ipv4addr"
+
+ return 0
+}
+
+
+## Get IPv4 address of a device
+# $1: <Interface>
+# stdout: <IPv4 address> if available
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem (more than one IPv4 address applied)
+ipv6_get_ipv4addr_of_device() {
+ local fn="ipv6_get_ipv4addr_of_device"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test_device_status $device
+
+ if [ $? != 0 -a $? != 11 ]; then
+ # Device doesn't exist
+ return 3
+ fi
+
+ # Device exists, retrieve the first address only
+ local ipv4addr="$(/sbin/ip -o -4 addr show dev $device | awk '{ print $4 }' | awk -F/ '{ print $1; exit }')"
+
+ if [ $? != 0 ]; then
+ return 3
+ fi
+
+ if [ "$ipv4addr" = "any" ]; then
+ local ipv4addr="0.0.0.0"
+ fi
+
+ echo "$ipv4addr"
+
+ return 0
+}
+
+
+## Set IPv6 MTU for a device
+# $1: <Interface>
+# $2: <IPv6 MTU>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_set_mtu() {
+ local fn="ipv6_set_mtu"
+
+ local device=$1
+ local ipv6_mtu=$2
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ if [ -z "$ipv6_mtu" ]; then
+ net_log $"Missing parameter 'IPv6 MTU' (arg 2)" err $fn
+ return 1
+ fi
+
+ # Check range
+ if [ $ipv6_mtu -lt 1280 -o $ipv6_mtu -gt 65535 ]; then
+ net_log $"Given IPv6 MTU '$ipv6_mtu' is out of range" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ # Set value
+ /sbin/ip link set dev $device mtu $ipv6_mtu
+
+ return 0
+}
+
+
+## Set a default route
+# $1: <IPv6 address> : gateway, can also contain scope suffix (device name), cause a warning if not matching with $2 (but will have precedence)
+# $2: <gateway device>: gateway device (optional in case of $1 is a global address or $1 contains scope suffix)
+# $3: <check device>: (optional) device to check scope and gateway device against (setup is skipped, if not matching)
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_set_default_route() {
+ local fn="ipv6_set_default_route"
+
+ local address=$1
+ local device=$2
+ local device_check=$3
+
+ ipv6_test testonly || return 2
+
+ # Map the unspecified address to nothing
+ if [ "$address" = "::" ]; then
+ local address=""
+ fi
+
+ if [ -n "$address" ]; then
+ local addressgw=${address%%%*}
+ local device_scope=$(echo $address | awk -F% '{ print $2 }')
+
+ if [ -z "$addressgw" ]; then
+ net_log $"Given IPv6 default gateway '$address' is not in proper format" err $fn
+ return 3
+ fi
+
+ # Scope device has precedence
+ if [ -n "$device_scope" -a -n "$device" -a "$device_scope" != "$device" ]; then
+ net_log $"Given IPv6 default gateway '$address' has scope '$device_scope' defined, given default gateway device '$device' will be not used" info $fn
+ local device=""
+ fi
+
+ # Link local addresses require a device
+ if echo $addressgw | LC_ALL=C grep -qi "^fe80:"; then
+ if [ -z "$device_scope" ]; then
+ if [ -z "$device" ]; then
+ net_log $"Given IPv6 default gateway '$address' is link-local, but no scope or gateway device is specified" err $fn
+ return 3
+ fi
+ fi
+ fi
+
+ # Check whether the route belongs to the specific given interface
+ if [ -n "$device_check" ]; then
+ # Check whether scope device matches given check device
+ if [ -n "$device_scope" -a "$device_check" != "$device_scope" ]; then
+ # scope device != specific given -> skip
+ return 0
+ elif [ -n "$device" -a "$device_check" != "$device" ]; then
+ # gateway device != specific given -> skip
+ return 0
+ fi
+ fi
+
+ # Set device now, if not given
+ if [ -z "$device" ]; then
+ local device="$device_scope"
+ fi
+
+ if [ -z "$device" ]; then
+ # Note: this can cause a warning and a not installed route, if given address is not reachable on the link
+ ipv6_add_route ::/0 $addressgw
+ else
+ ipv6_add_route ::/0 $addressgw $device
+ fi
+ elif [ -n "$device" ]; then
+ # Check whether the route belongs to the specific given interface
+ if [ -n "$device_check" -a "$device_check" != "$device" ]; then
+ # gateway device != specific given -> skip
+ return 0
+ fi
+
+ ipv6_test_route_requires_next_hop $device
+ local result=$?
+
+ if [ $result = 0 ]; then
+ net_log $"Given IPv6 default device '$device' requires an explicit nexthop" err $fn
+ return 3
+ elif [ $result != 10 ]; then
+ net_log $"Given IPv6 default device '$device' doesn't exist or isn't up" err $fn
+ return 3
+ fi
+
+ ipv6_add_route ::/0 :: $device
+ else
+ net_log $"No parameters given to setup a default route" err $fn
+ return 3
+ fi
+
+ return 0
+}
+
+
+## Resolve need of explicit next hop for an interface
+# $1: <Interface>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem 10=needs no explicit hop
+ipv6_test_route_requires_next_hop() {
+ local fn="ipv6_test_route_requires_next_hop"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ ipv6_test_device_status $device
+
+ if [ $? != 0 ]; then
+ return 3
+ fi
+
+ if [ "$device" = "sit0" ]; then
+ return 10
+ fi
+
+ if /sbin/ip -o link show $device 2>/dev/null | LC_ALL=C grep -q "POINTOPOINT"; then
+ return 10
+ fi
+
+ return 0
+}
+
+
+## Trigger radvd
+# $1: up|down : device reason for triggering (coming up or going down)
+# $2: [startstop|restart|reload|SIGHUP] : triger mechanism (default is "SIGHUP")
+# "startstop" : reason=up -> start, reason=down -> stop
+# $3: [<filename>] : alternative pid file [optional]
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_trigger_radvd() {
+ local fn="ipv6_trigger_radvd"
+
+ local reason=$1
+ local mechanism=$2
+ local pidfile=$3
+
+ if [ -z "$reason" ]; then
+ net_log $"No reason given for sending trigger to radvd" err $fn
+ return 1
+ fi
+
+ if [ "$reason" != "up" -a "$reason" != "down" ]; then
+ net_log $"Unsupported reason '$reason' for sending trigger to radvd" err $fn
+ return 1
+ fi
+
+ if [ -z "$mechanism" ]; then
+ # Take default
+ local mechanism="SIGHUP"
+ fi
+
+ if [ -z "$pidfile" ]; then
+ local pidfile="/run/radvd/radvd.pid"
+ fi
+
+ # Print message and select action
+ case $mechanism in
+ 'startstop')
+ case $reason in
+ up)
+ local action="start"
+ ;;
+ down)
+ local action="stop"
+ ;;
+ esac
+ ;;
+ 'reload'|'restart'|'SIGHUP')
+ local action="$mechanism"
+ ;;
+ *)
+ net_log $"Unsupported mechanism '$mechanism' for sending trigger to radvd" err $fn
+ return 3
+ ;;
+ esac
+
+ # PID file needed?
+ if [ "$action" = "SIGHUP" ]; then
+ if ! [ -f "$pidfile" ]; then
+ if [ "$reason" = "down" ]; then
+ # be quiet because triggering may have been disabled
+ true
+ else
+ net_log $"Given pidfile '$pidfile' doesn't exist, cannot send trigger to radvd" err $fn
+ fi
+ return 3
+ fi
+
+ # Get PID
+ local pid="$(cat $pidfile)"
+ if [ -z "$pid" ]; then
+ # pidfile empty - strange
+ net_log $"Pidfile '$pidfile' is empty, cannot send trigger to radvd" err $fn
+ return 3
+ fi
+ fi
+
+
+ # Do action
+ case $action in
+ 'SIGHUP')
+ kill -HUP $pid
+ ;;
+ 'reload'|'restart'|'stop'|'start')
+ if ! /sbin/chkconfig --list radvd >/dev/null 2>&1; then
+ if [ "$reason" = "down" ]; then
+ # be quiet because triggering may have been disabled
+ true
+ else
+ net_log $"radvd not (properly) installed, triggering failed" err $fn
+ fi
+ return 3
+ else
+ /sbin/service radvd $action >/dev/null 2>&1
+ fi
+ ;;
+ *)
+ # Normally not reached, "action" is set above to proper value
+ ;;
+ esac
+
+ return 0
+}
+
+#https://www.vaspects.com/2013/12/11/services-dont-bind-to-ipv6-address/
+ipv6_wait_tentative() {
+ local fn="ipv6_wait_tentative"
+ local device=$1
+ local countdown=30
+ local ip_output=""
+
+ if [ -z "$device" ]; then
+ net_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ [ "$device" = lo ] && return 0
+
+ while [ ${countdown} -gt 0 ]; do
+ ip_output="$(ip -6 addr show dev ${device} scope global tentative)"
+
+ if [ -z "$ip_output" ]; then
+ return 0;
+ elif echo "$ip_output" | grep "dadfailed" > /dev/null; then
+ net_log $"Duplicate Address Detection: Duplicate addresses detected" err $fn
+ net_log $"Duplicate Address Detection: Please, fix your network configuration" err $fn
+ return 1
+ fi
+
+ net_log $"Waiting for interface ${device} IPv6 address(es) to leave the 'tentative' state" info $fn
+ sleep 1
+ countdown=$(($countdown - 1))
+ done
+
+ ip_output="$(ip -6 addr show dev ${device} scope global tentative)"
+
+ if [ -n "$ip_output" ]; then
+ net_log $"Some IPv6 address(es) of ${device} remain still in 'tentative' state" warning $fn
+ net_log $"Run 'ip -6 addr show dev ${device} scope global tentative' to see more" warning $fn
+ fi
+
+ return 0
+}
generated by cgit v1.2.1 (git 2.21.0) at 2024-05-27 19:39:23 +0000