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authorBill Nottingham <notting@redhat.com>2001-03-05 21:06:59 +0000
committerBill Nottingham <notting@redhat.com>2001-03-05 21:06:59 +0000
commite8bdf81f236eaa7e27afc0fa2842e268d599b2e6 (patch)
tree81b063387386cc51fee17d235e2621f89f724102 /sysconfig/network-scripts
parent3e8be2b70d3838bfb77a7011f84c89b8a537a384 (diff)
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some more ipv6 updates (#30506)
Diffstat (limited to 'sysconfig/network-scripts')
-rw-r--r--sysconfig/network-scripts/network-functions-ipv6278
1 files changed, 215 insertions, 63 deletions
diff --git a/sysconfig/network-scripts/network-functions-ipv6 b/sysconfig/network-scripts/network-functions-ipv6
index 880657ff..567176bc 100644
--- a/sysconfig/network-scripts/network-functions-ipv6
+++ b/sysconfig/network-scripts/network-functions-ipv6
@@ -5,11 +5,16 @@
# Taken from:
# (P) & (C) 1997-2001 by Peter Bieringer <pb@bieringer.de>
#
-# Version: 2001-02-22
+# Version: 2001-03-03b
+#
+# Extended address detection is enabled, if 'ipv6calc' is installed
+# Available here: http://www.bieringer.de/linux/IPv6/tools/index.html#ipv6calc
+#
+# Known bugs:
+# sit0 will not be shutdowned, if an additional IPv6 address was manually added to this device
#
-# Filter tags (for stripping, empty lines following if all is stripped)
-
+# Filter tags (for stripping, empty lines following here if all is stripped)
@@ -19,19 +24,27 @@
# 1 = error occurs
# 2 = not enabled, i.e. no IPv6 kernel support or switched off by configuration
+##### Test for "ipv6calc" (can be used for better duplicate address detection)
+EXISTS_ipv6calc=no
+ if which ipv6calc >/dev/null 2>&1; then
+ EXISTS_ipv6calc=yes
+ else
+ true
+ fi
+
##### Test for IPv6 capabilites
function test_ipv6()
{
- # Test for IPv6 enabled kernel
+ # Test for IPv6 enabled kernel
if ! [ -f /proc/net/if_inet6 ]; then
modprobe ipv6
if ! [ -f /proc/net/if_inet6 ]; then
- echo $"Kernel is not compiled with IPv6 support"
+ echo $"Kernel is not compiled with IPv6 support"
return 2
fi
fi
@@ -55,7 +68,7 @@ function forwarding_ipv6() {
fw_control=$1
fw_device=$2 # maybe empty
- if [ -z $fw_control ]; then
+ if [ -z "$fw_control" ]; then
echo $"Missing parameter 'forwarding control'"
forwarding_ipv6_usage
return 1
@@ -83,13 +96,13 @@ function forwarding_ipv6() {
fi
# Global control? (if no device is given)
- if [ -z $fw_device ]; then
- sysctl -w net.ipv6.conf.all.forwarding=$status >/dev/null 2>&1
+ if [ -z "$fw_device" ]; then
+ sysctl -w net.ipv6.conf.all.forwarding=$status >/dev/null 2>&1
fi
# Per device control
- if [ ! -z $fw_device ]; then
- sysctl -w net.ipv6.conf.$fw_device.forwarding=$status >/dev/null 2>&1
+ if [ ! -z "$fw_device" ]; then
+ sysctl -w net.ipv6.conf.$fw_device.forwarding=$status >/dev/null 2>&1
fi
}
@@ -111,13 +124,13 @@ function ifup_ipv6_route() {
gatewayipv6=$2
device=$3 # maybe empty
- if [ -z $networkipv6 ]; then
+ if [ -z "$networkipv6" ]; then
echo $"Missing parameter 'IPv6-network'"
ifupdown_ipv6_route_usage
return 1
fi
- if [ -z $gatewayipv6 ]; then
+ if [ -z "$gatewayipv6" ]; then
echo $"Missing parameter 'IPv6-gateway'"
ifupdown_ipv6_route_usage
return 1
@@ -132,10 +145,24 @@ function ifup_ipv6_route() {
test_ipv6 || return
- if [ -z $device ]; then
- route -A inet6 add $networkipv6 gw $gatewayipv6
+ if [ -z "$device" ]; then
+ output="`LC_ALL=C route -A inet6 add $networkipv6 gw $gatewayipv6 2>&1`"
+ if [ $? -ne 0 ]; then
+ if echo $output | grep -i -q 'SIOCADDRT: File exists'; then
+ true
+ else
+ echo $output
+ fi
+ fi
else
- route -A inet6 add $networkipv6 gw $gatewayipv6 dev $device
+ output="`LC_ALL=C route -A inet6 add $networkipv6 gw $gatewayipv6 dev $device 2>&1`"
+ if [ $? -ne 0 ]; then
+ if echo $output | grep -i -q 'SIOCADDRT: File exists'; then
+ true
+ else
+ echo $output
+ fi
+ fi
fi
}
@@ -149,13 +176,13 @@ function ifdown_ipv6_route() {
gatewayipv6=$2
device=$3 # maybe empty
- if [ -z $networkipv6 ]; then
+ if [ -z "$networkipv6" ]; then
echo $"Missing parameter 'IPv6-network'"
ifup_ipv6_route_usage
return 1
fi
- if [ -z $gatewayipv6 ]; then
+ if [ -z "$gatewayipv6" ]; then
echo $"Missing parameter 'IPv6-gateway'"
ifup_ipv6_route_usage
return 1
@@ -170,10 +197,24 @@ function ifdown_ipv6_route() {
test_ipv6 || return
- if [ -z $device ]; then
- route -A inet6 del $networkipv6 gw $gatewayipv6
+ if [ -z "$device" ]; then
+ output="`LC_ALL=C route -A inet6 del $networkipv6 gw $gatewayipv6 2>&1`"
+ if [ $? -ne 0 ]; then
+ if echo $output | grep -i -q 'SIOCDELRT: No such process'; then
+ true
+ else
+ echo $output
+ fi
+ fi
else
- route -A inet6 del $networkipv6 gw $gatewayipv6 dev $device
+ output="`LC_ALL=C route -A inet6 del $networkipv6 gw $gatewayipv6 dev $device 2>&1`"
+ if [ $? -ne 0 ]; then
+ if echo $output | grep -i -q 'SIOCDELRT: No such process'; then
+ true
+ else
+ echo $output
+ fi
+ fi
fi
}
@@ -189,7 +230,7 @@ function ifup_ipv6_autotunnel() {
# enable IPv6-over-IPv4 tunnels
- if LANG=C ifconfig sit0 | grep -q "UP "; then
+ if LC_ALL=C ifconfig sit0 | grep -q "UP "; then
# already up, do nothing
true
else
@@ -210,16 +251,23 @@ function ifdown_ipv6_autotunnel() {
test_ipv6 || return
- # disable IPv6-over-IPv4 tunnels (if a tunnel is no longer up)
- if route -A inet6 -n | grep sit0 | grep -v -q "^::"; then
- # existing routes, do nothing
- true
- else
- # basic tunnel device to down
- # Switch off forwarding
- forwarding_ipv6 off sit0
+ if LC_ALL=C ifconfig sit0 | grep -q "UP "; then
+ # still up?
+
+ # disable IPv6-over-IPv4 tunnels (if a tunnel is no longer up)
+ if LC_ALL=C route -A inet6 -n | grep sit0 | awk '{ print $2 }' | grep -v -q "^::$"; then
+ # still existing routes, skip shutdown of sit0
+ true
+ elif LC_ALL=C ifconfig sit0 | grep 'inet6 addr:' | awk '{ print $3 }' | grep -v -q '^::'; then
+ # still existing IPv6 addresses, skip shutdown of sit0
+ true
+ else
+ # basic tunnel device to down
+ # Switch off forwarding
+ forwarding_ipv6 off sit0
- ifconfig sit0 down
+ ifconfig sit0 down
+ fi
fi
}
@@ -241,19 +289,19 @@ function ifup_ipv6_tunnel() {
addressipv4tunnel=$2
routeipv6=$3
- if [ -z $device ]; then
+ if [ -z "$device" ]; then
echo $"Missing parameter 'device'"
ifupdown_ipv6_tunnel_usage
return 1
fi
- if [ -z $addressipv4tunnel ]; then
+ if [ -z "$addressipv4tunnel" ]; then
echo $"Missing parameter 'IPv4-tunneladdress'"
ifupdown_ipv6_tunnel_usage
return 1
fi
- if [ -z $routeipv6 ]; then
+ if [ -z "$routeipv6" ]; then
echo $"Missing parameter 'IPv6-route'"
ifupdown_ipv6_tunnel_usage
return 1
@@ -267,7 +315,14 @@ function ifup_ipv6_tunnel() {
ifup_ipv6_autotunnel
# Set up a tunnel
- route -A inet6 add $routeipv6 gw ::$addressipv4tunnel dev sit0
+ output="`LC_ALL=C route -A inet6 add $routeipv6 gw ::$addressipv4tunnel dev sit0 2>&1`"
+ if [ $? -ne 0 ]; then
+ if echo $output | grep -i -q 'SIOCADDRT: File exists'; then
+ true
+ else
+ echo $output
+ fi
+ fi
}
@@ -281,19 +336,19 @@ function ifdown_ipv6_tunnel() {
addressipv4tunnel=$2
routeipv6=$3
- if [ -z $device ]; then
+ if [ -z "$device" ]; then
echo $"Missing parameter 'device'"
ifupdown_ipv6_tunnel_usage
return 1
fi
- if [ -z $addressipv4tunnel ]; then
+ if [ -z "$addressipv4tunnel" ]; then
echo $"Missing parameter 'IPv4-tunneladdress'"
ifupdown_ipv6_tunnel_usage
return 1
fi
- if [ -z $routeipv6 ]; then
+ if [ -z "$routeipv6" ]; then
echo $"Missing parameter 'IPv6-route'"
ifupdown_ipv6_tunnel_usage
return 1
@@ -304,7 +359,14 @@ function ifdown_ipv6_tunnel() {
# Set up a tunnel
- route -A inet6 del $routeipv6 gw ::$addressipv4tunnel dev sit0
+ output="`route -A inet6 del $routeipv6 gw ::$addressipv4tunnel dev sit0 2>&1`"
+ if [ $? -ne 0 ]; then
+ if echo $output | grep -i -q 'SIOCDELRT: No such process'; then
+ true
+ else
+ echo $output
+ fi
+ fi
# disable IPv6-over-IPv4 tunneling (if no longer a tunnel is up)
ifdown_ipv6_autotunnel
@@ -312,6 +374,82 @@ function ifdown_ipv6_tunnel() {
}
+## Remove all IPv6 tunnels for a given tunnel endpoint
+# $1: Interface (not used - dummy)
+# $2: IPv4-tunneladdress
+function ifdown_ipv6_tunnel_all() {
+ idtuall_device=$1
+ idtuall_tunnel=$2
+
+ if [ -z "$idtuall_device" ]; then
+ echo $"Missing parameter 'device'"
+ echo $"Usage: ifdown_ipv6_tunnel_all interfacename IPv4-tunneladdress"
+ return 1
+ fi
+
+ if [ -z "$idtuall_tunnel" ]; then
+ echo $"Missing parameter 'IPv4-tunneladdress'"
+ echo $"Usage: ifdown_ipv6_tunnel_all interfacename IPv4-tunneladdress"
+ return 1
+ fi
+ # Get all IPv6 routes through given interface and remove them
+ LC_ALL=C route -A inet6 | grep "::$idtuall_tunnel" | while read ipv6net nexthop flags metric ref use iface args; do
+ if [ "::$idtuall_tunnel" = "$nexthop" ]; then
+ if echo $flags | grep -v -q "A"; then
+ # Only non addrconf (automatic installed) routes should be removed
+ ifdown_ipv6_tunnel $idtuall_device $idtuall_tunnel $ipv6net
+ fi
+ fi
+ done
+}
+
+
+##### Test, whether an IPv6 address exists on an interface
+# $1: Device for testing
+# $2: Address to test (without prefix)
+# $3: Prefix of address $1
+# return values: 1:problem, 10:not exists, 11:exits
+function test_ipv6_addrs_exists () {
+ testdevice=$1
+ testaddr=$2
+ testprefix=$3
+
+ if [ -z "$testaddr" ]; then
+ echo $"Missing parameter 'IPv6AddrToTest'"
+ return 1
+ fi
+
+
+ if [ "$EXISTS_ipv6calc" = "yes" ]; then
+ # Using ipv6calc and compare against /proc/net/if_inet6
+
+ convertresult="`ipv6calc --addr2if_inet6 $testaddr/$testprefix`"
+ # Split in address, scope and prefix length
+ test_addr="`echo $convertresult | awk '{ print $1 }'`"
+ test_scope="`echo $convertresult | awk '{ print $2 }'`"
+ test_prefixlength="`echo $convertresult | awk '{ print $3 }'`"
+
+ if [ -z "$test_prefixlength" ]; then
+ testresult="`grep "$test_addr .. .. $test_scope .." /proc/net/if_inet6 | grep $testdevice$`"
+ else
+ testresult="`grep "$test_addr .. $test_prefixlength $test_scope .." /proc/net/if_inet6 | grep $testdevice$`"
+ fi
+ if [ ! -z "$testresult" ]; then
+ return 11
+ else
+ return 10
+ fi
+ else
+ # low budget version, only works if given address is in equal form like ifconfig displays
+ testresult="`LC_ALL=C ifconfig $testdevice | grep "inet6 addr:" | grep -i ": $testaddr/$testprefix" | awk '{ print $3 }'`"
+ if [ ! -z "$testresult" ]; then
+ return 11
+ else
+ return 10
+ fi
+ fi
+}
+
##### Interface configuration
function ifupdown_ipv6_usage() {
echo $"Usage: $0 interfacename IPv6-address/IPv6-prefixlength"
@@ -324,7 +462,7 @@ function ifup_ipv6_real() {
device=$1
address=$2
- if [ -z $device ]; then
+ if [ -z "$device" ]; then
echo $"Missing parameter 'device'"
ifupdown_ipv6_usage
return 1
@@ -335,14 +473,14 @@ function ifup_ipv6_real() {
return 0;
fi
- if [ -z $address ]; then
+ if [ -z "$address" ]; then
echo $"Missing parameter 'IPv6-address'"
ifupdown_ipv6_usage
return 1
fi
# Test status of interface
- if LANG=C ifconfig $device | grep -q "UP "; then
+ if LC_ALL=C ifconfig $device | grep -q "UP "; then
# Interface is up
true
else
@@ -355,7 +493,7 @@ function ifup_ipv6_real() {
address_implicit="`echo $address | awk -F/ '{ print $1 }'`"
# Test for prefix length
- if [ -z $prefixlength_implicit ]; then
+ if [ -z "$prefixlength_implicit" ]; then
echo $"Missing 'prefix length' for given address"
ifupdown_ipv6_usage
return 1
@@ -370,15 +508,18 @@ function ifup_ipv6_real() {
# Only add, if address do not already exist
- address_configured="`LANG=C ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $3 }'`"
- address_configured_type="`LANG=C ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $4 }'`"
+ test_ipv6_addrs_exists $device $address_implicit $prefixlength_implicit
+ retval=$?
+ if [ $retval -lt 10 ]; then
+ return 2
+ fi
- if [ "$address_configured" = "$address" ]; then
+ if [ $retval -eq 11 ]; then
true
else
ifconfig $device add $address || return 2
fi
-
+
}
@@ -388,14 +529,14 @@ function ifup_ipv6_real() {
function ifdown_ipv6_real_all() {
idall_device=$1
- if [ -z $idall_device ]; then
- echo $"Missing parameter 'idall_device'"
+ if [ -z "$idall_device" ]; then
+ echo $"Missing parameter 'device'"
echo $"Usage: ifdown_ipv6_real_all interfacename"
return 1
fi
# Get all IPv6 routes through given interface and remove them
- route -A inet6 | grep $idall_device | while read ipv6net nexthop flags metric ref use iface args; do
+ LC_ALL=C route -A inet6 | grep $idall_device | while read ipv6net nexthop flags metric ref use iface args; do
if [ "$idall_device" = "$iface" ]; then
if echo $flags | grep -v -q "A"; then
# Only non addrconf (automatic installed) routes should be removed
@@ -405,9 +546,20 @@ function ifdown_ipv6_real_all() {
done
# Get all IPv6 addresses assigned to given interface and remove them
- LANG=C ifconfig $idall_device | grep "inet6 addr:" | awk '{ print $3 }' | while read ipv6addr args; do
- ifdown_ipv6_real $idall_device $ipv6addr
- done
+ if [ "$EXISTS_ipv6calc" = "yes" ]; then
+ grep $idall_device$ /proc/net/if_inet6 | while read hexaddr dummy1 hexprefixlenth hexscope device args; do
+ if [ "$hexscope" != "20" ]; then
+ ipv6addr="`ipv6calc --if_inet62addr $hexaddr $hexprefixlenth`"
+ ifdown_ipv6_real $idall_device $ipv6addr
+ fi
+ done
+ else
+ LC_ALL=C ifconfig $idall_device | grep "inet6 addr:" | while read dummy1 dummy2 ipv6addr scope args; do
+ if [ "$scope" != "Scope:Link" ]; then
+ ifdown_ipv6_real $idall_device $ipv6addr
+ fi
+ done
+ fi
}
## Remove an IPv6 address on given interface
@@ -417,7 +569,7 @@ function ifdown_ipv6_real() {
device=$1
address=$2
- if [ -z $device ]; then
+ if [ -z "$device" ]; then
echo $"Missing parameter 'device'"
ifupdown_ipv6_usage
return 1
@@ -428,7 +580,7 @@ function ifdown_ipv6_real() {
return 0;
fi
- if [ -z $address ]; then
+ if [ -z "$address" ]; then
echo $"Missing parameter 'IPv6-address'"
ifupdown_ipv6_usage
return 1
@@ -439,7 +591,7 @@ function ifdown_ipv6_real() {
address_implicit="`echo $address | awk -F/ '{ print $1 }'`"
# Test for prefix length
- if [ -z $prefixlength_implicit ]; then
+ if [ -z "$prefixlength_implicit" ]; then
echo $"Missing 'prefix length' for given address"
ifupdown_ipv6_usage
return 1
@@ -454,14 +606,14 @@ function ifdown_ipv6_real() {
# Only remove, if address exists and is not link-local (prevents from kernel crashing)
- address_configured="`LANG=C ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $3 }'`"
- address_configured_type="`LANG=C ifconfig $device | grep "inet6 addr:" | grep "$address" | awk '{ print $4 }'`"
- if [ ! -z "$address_configured" ]; then
- if [ "$address_configured_type" = "Scope:Link" ]; then
- true
- else
- ifconfig $device del $address || return 2
- fi
+ test_ipv6_addrs_exists $device $address_implicit $prefixlength_implicit
+ retval=$?
+ if [ $retval -lt 10 ]; then
+ return 2
+ fi
+
+ if [ $retval -eq 11 ]; then
+ ifconfig $device del $address || return 2
else
true
fi