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-rw-r--r--sysconfig/network-scripts/network-functions-ipv6142
1 files changed, 56 insertions, 86 deletions
diff --git a/sysconfig/network-scripts/network-functions-ipv6 b/sysconfig/network-scripts/network-functions-ipv6
index 6b4441a8..82c8d020 100644
--- a/sysconfig/network-scripts/network-functions-ipv6
+++ b/sysconfig/network-scripts/network-functions-ipv6
@@ -5,7 +5,7 @@
# Taken from:
# (P) & (C) 1997-2001 by Peter Bieringer <pb@bieringer.de>
#
-# Version: 2001-05-22d
+# Version: 2001-07-17a
#
# Extended address detection is enabled, if 'ipv6calc' is installed
# Available here: http://www.bieringer.de/linux/IPv6/tools/index.html#ipv6calc
@@ -23,7 +23,6 @@
##### Test for "ipv6calc" (used for better existing address detection)
EXISTS_ipv6calc=no
if which ipv6calc >/dev/null 2>&1; then
- # do checks, whether ipv6calc does what was expected
if ipv6calc --if_inet62addr 3ffe04000100f1010000000000000001 40 | grep -q -v '3ffe:400:100:f101::1/64'; then
false
elif ipv6calc --addr2if_inet6 3ffe:400:100::1/64 | grep -q -v '3ffe0400010000000000000000000001 00 40'; then
@@ -42,7 +41,6 @@ test_ipv6() {
local testflag=$1
- # Test for IPv6 enabled kernel
if ! [ -f /proc/net/if_inet6 ]; then
if [ "$testflag" = "testonly" ]; then
@@ -58,7 +56,6 @@ test_ipv6() {
fi
if [ ! -d /proc/sys/net/ipv6/conf/ ]; then
- # IPv6 related proc directory doesn't exist
return 2
fi
@@ -98,7 +95,6 @@ forwarding_ipv6() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
@@ -142,16 +138,10 @@ ifup_ipv6_route() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
- # Test, whether given IPv6 address is valid
- if ! testipv6_valid $networkipv6; then
- return 2
- fi
- if ! testipv6_valid $gatewayipv6; then
- return 2
- fi
+ testipv6_valid $networkipv6 || return 2
+ testipv6_valid $gatewayipv6 || return 2
if [ -z "$device" ]; then
@@ -195,16 +185,11 @@ ifdown_ipv6_route() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
# Test, whether given IPv6 address is valid
- if ! testipv6_valid $networkipv6; then
- return 2
- fi
- if ! testipv6_valid $gatewayipv6; then
- return 2
- fi
+ testipv6_valid $networkipv6 || return 2
+ testipv6_valid $gatewayipv6 || return 2
if [ -z "$device" ]; then
@@ -241,7 +226,6 @@ ifdown_ipv6_route_all() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
@@ -251,7 +235,6 @@ ifdown_ipv6_route_all() {
if [ ! -z "$gatewaymatch" ]; then
# Test if given gateway matches
if [ "$gatewaymatch" != "$nexthop" ]; then
- # No match, take next
continue
fi
fi
@@ -269,19 +252,16 @@ ifdown_ipv6_route_all() {
## Configure automatic tunneling up
ifup_ipv6_autotunnel() {
- # Run IPv6 test
test_ipv6 || return 2
# enable IPv6-over-IPv4 tunnels
if test_interface_status sit0; then
- # already up, do nothing
true
else
- # basic tunnel device to up
+ # bring up basic tunnel device
ifconfig sit0 up
- # Test, whether "up" has worked
if ! test_interface_status sit0; then
echo $"Tunnel device 'sit0' enabling didn't work - FATAL ERROR!"
return 2
@@ -299,12 +279,10 @@ ifup_ipv6_autotunnel() {
## Configure automatic tunneling down
ifdown_ipv6_autotunnel() {
- # Run IPv6 test
test_ipv6 || return 2
if test_interface_status sit0; then
- # still up?
# disable IPv6-over-IPv4 tunnels (if a tunnel is no longer up)
if LC_ALL=C route -A inet6 -n | grep "sit0\W*$" | awk '{ print $2 }' | grep -v -q "^::$"; then
@@ -314,15 +292,13 @@ ifdown_ipv6_autotunnel() {
# still existing IPv6 addresses, skip shutdown of sit0
true
else
- # basic tunnel device to down
- # Set sysctls proper
+ # take down basic tunnel device
sysctl -w net.ipv6.conf.sit0.forwarding=0 >/dev/null
sysctl -w net.ipv6.conf.sit0.accept_ra=0 >/dev/null
sysctl -w net.ipv6.conf.sit0.accept_redirects=0 >/dev/null
ifconfig sit0 down
- # Test, whether "down" has worked
if test_interface_status sit0; then
echo $"Tunnel device 'sit0' is still up - FATAL ERROR!"
return 2
@@ -351,7 +327,7 @@ ifup_ipv6_tunnel() {
fi
if [ -z "$addressipv4tunnel" ]; then
- echo $"Missing parameter 'IPv4-tunneladdress' (arg 2)"
+ echo $"Missing parameter 'IPv4-tunnel address' (arg 2)"
return 1
fi
@@ -360,14 +336,11 @@ ifup_ipv6_tunnel() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
# Test, whether given IPv6 address is valid
- if ! testipv6_valid $routeipv6; then
- return 2
- fi
+ testipv6_valid $routeipv6 || return 2
# enable general IPv6-over-IPv4 tunneling
@@ -397,33 +370,30 @@ ifdown_ipv6_tunnel() {
if [ -z "$device" ]; then
echo $"Missing parameter 'device' (arg 1)"
- ifupdown_ipv6_tunnel_usage
return 1
fi
if [ -z "$addressipv4tunnel" ]; then
echo $"Missing parameter 'IPv4-tunnel address' (arg 2)"
- ifupdown_ipv6_tunnel_usage
return 1
fi
if [ -z "$routeipv6" ]; then
echo $"Missing parameter 'IPv6-route' (arg 3)"
- ifupdown_ipv6_tunnel_usage
return 1
fi
- # Run IPv6 test
- test_ipv6 || return 2
+ test_ipv6 || return 2
+
# Delete a NBMA-styled tunnel
- ifdown_ipv6_route $routeipv6::$addressipv4tunnel sit0
+ ifdown_ipv6_route $routeipv6 ::$addressipv4tunnel sit0
if [ $? -ne 0 ]; then
return 2
fi
- # disable IPv6-over-IPv4 tunneling (if no longer a tunnel is up)
+ # disable IPv6-over-IPv4 tunneling (if this was the last tunnel)
ifdown_ipv6_autotunnel
}
@@ -431,7 +401,7 @@ ifdown_ipv6_tunnel() {
## Remove all IPv6 tunnels for a given tunnel endpoint
# $1: Interface (not used - dummy)
-# $2: IPv4-tunneladdress
+# $2: IPv4-tunnel address
ifdown_ipv6_tunnel_all() {
local idtuall_device=$1
local idtuall_tunnel=$2
@@ -442,11 +412,10 @@ ifdown_ipv6_tunnel_all() {
fi
if [ -z "$idtuall_tunnel" ]; then
- echo $"Missing parameter 'IPv4-tunneladdress' (arg 2)"
+ echo $"Missing parameter 'IPv4-tunnel address' (arg 2)"
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
@@ -460,7 +429,7 @@ ifdown_ipv6_tunnel_all() {
fi
done
- # disable IPv6-over-IPv4 tunneling (if no longer a tunnel is up)
+ # disable IPv6-over-IPv4 tunneling (if this was the last tunnel)
ifdown_ipv6_autotunnel
return 0
}
@@ -485,7 +454,7 @@ test_ipv6_address_exists() {
if [ "$EXISTS_ipv6calc" = "yes" ]; then
# Using ipv6calc and compare against /proc/net/if_inet6
- local convertresult="`LC_ALL=C ipv6calc --addr2if_inet6 $testaddr/$testprefix`"
+ local convertresult="`ipv6calc --addr2if_inet6 $testaddr/$testprefix`"
# Split in address, scope and prefix length
local test_addr="`echo $convertresult | awk '{ print $1 }'`"
local test_scope="`echo $convertresult | awk '{ print $2 }'`"
@@ -533,23 +502,15 @@ ifup_ipv6_real() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
- # Test, whether given IPv6 address is valid
- if ! testipv6_valid $address; then
- return 2
- fi
+ testipv6_valid $address || return 2
- # Test status of interface
if test_interface_status $device; then
- # Interface is already up
true
else
- # no IPv4 for this interface, interface is still down, do up ...
ifconfig $device up
- # Test, whether "up" has worked
if ! test_interface_status $device; then
echo $"Device '$device' enabling didn't work - FATAL ERROR!"
return 2
@@ -561,7 +522,7 @@ ifup_ipv6_real() {
local prefixlength_implicit="`echo $address | awk -F/ '{ print $2 }'`"
local address_implicit="`echo $address | awk -F/ '{ print $1 }'`"
- # Only add, if address do not already exist
+ # Only add if address does not already exist
test_ipv6_address_exists $device $address_implicit $prefixlength_implicit
retval=$?
if [ $retval -lt 10 ]; then
@@ -589,7 +550,6 @@ ifdown_ipv6_real_all() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
@@ -624,13 +584,9 @@ ifdown_ipv6_real() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
- # Test, whether given IPv6 address is valid
- if ! testipv6_valid $address; then
- return 2
- fi
+ testipv6_valid $address || return 2
# Extract address parts
@@ -664,7 +620,6 @@ testipv6_valid() {
if [ -z "$testipv6addr_valid" ]; then
- # nothing for testing
return 2
fi
@@ -713,7 +668,6 @@ testipv4_globalusable() {
if [ -z "$testipv4addr_globalusable" ]; then
- # nothing for testing
return 2
fi
@@ -823,23 +777,22 @@ ifup_ipv6to4() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
- # generate 6to4 address
+ # Generate 6to4 address
local prefix6to4="`create6to4prefix $localipv4`"
if [ $? -ne 0 -o -z "$prefix6to4" ]; then
return 2
fi
if [ -z "$localipv6to4suffix" ]; then
- local address6to4="${prefix6to4}::1/48"
+ local address6to4="${prefix6to4}::1/16"
else
- local address6to4="${prefix6to4}::${localipv6to4suffix}/48"
+ local address6to4="${prefix6to4}::${localipv6to4suffix}/16"
fi
- # enable general IPv6-over-IPv4 tunneling
+ # Enable general IPv6-over-IPv4 tunneling
ifup_ipv6_autotunnel
ifup_ipv6_real sit0 $address6to4
@@ -862,17 +815,15 @@ ifdown_ipv6to4_all() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
- # Get all configured 6to4 addresses
+ # Get all configured 6to4 addresses and delete them
LC_ALL=C ip addr show dev sit0 | grep inet6 | awk '{ print $2 }' | grep "^2002:" | while read ipv6to4addr; do
- # And delete them
ifdown_ipv6_real sit0 $ipv6to4addr
done
- # try to disable general IPv6-over-IPv4 tunneling
+ # Try to disable general IPv6-over-IPv4 tunneling
ifdown_ipv6_autotunnel
}
@@ -896,7 +847,6 @@ ifdown_ipv6to4() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
@@ -908,9 +858,9 @@ ifdown_ipv6to4() {
fi
if [ -z "$localipv6to4suffix" ]; then
- local address6to4="$prefix6to4::1/48"
+ local address6to4="$prefix6to4::1/16"
else
- local address6to4="${prefix6to4}::${localipv6to4suffix}/48"
+ local address6to4="${prefix6to4}::${localipv6to4suffix}/16"
fi
ifdown_ipv6_real sit0 $address6to4
@@ -918,7 +868,7 @@ ifdown_ipv6to4() {
return 2
fi
- # try to disable general IPv6-over-IPv4 tunneling
+ # Try to disable general IPv6-over-IPv4 tunneling
ifdown_ipv6_autotunnel
if [ $? -ne 0 ]; then
return 2
@@ -945,17 +895,15 @@ ifup_ipv6_tunneldev() {
fi
if [ -z "$addressipv4tunnel" ]; then
- echo $"Missing parameter 'IPv4-tunneladdress' (arg 2)"
+ echo $"Missing parameter 'IPv4-tunnel address' (arg 2)"
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
if ! test_interface_status $device; then
- # Get default TTL
local ttldefault="`sysctl net.ipv4.ip_default_ttl | awk '{ print $3 }'`"
if [ -z "$ttldefault" ]; then
local ttldefault=64
@@ -990,7 +938,6 @@ ifup_ipv6_tunneldev() {
ifconfig $device up
- # Test, whether creation did worked
if ! test_interface_status $device; then
echo $"Tunnel device '$device' bringing up didn't work - ERROR!"
return 2
@@ -1026,12 +973,10 @@ ifdown_ipv6_tunneldev() {
return 1
fi
- # Run IPv6 test
test_ipv6 || return 2
if test_interface_status $device; then
- # Shut down tunnel
ifdown_ipv6_real_all $device
else
if [ "$device" != "sit0" ]; then
@@ -1043,7 +988,6 @@ ifdown_ipv6_tunneldev() {
if ip tunnel | grep -q "^$device:" ; then
ip tunnel del $device
- # Test, whether removing did worked
if test_interface_status $device; then
false
fi
@@ -1055,3 +999,29 @@ ifdown_ipv6_tunneldev() {
return 0
}
+
+## Set IPv6 MTU for a device
+# $1: Interface
+# $2: IPv6 MTU
+ipv6_set_mtu() {
+ local device=$1
+ local ipv6_mtu=$2
+
+ if [ -z "$device" ]; then
+ echo $"Missing parameter 'device' (arg 1)"
+ return 1
+ fi
+
+ if [ -z "$ipv6_mtu" ]; then
+ echo $"Missing parameter 'IPv6 MTU' (arg 2)"
+ return 1
+ fi
+
+ # Check range
+ if [ $ipv6_mtu -lt 1280 -o $ipv6_mtu -gt 65535 ]; then
+ echo $"Given IPv6 MTU is out of range"
+ return 1
+ fi
+
+ sysctl -w net.ipv6.conf.$device.mtu=$ipv6_mtu >/dev/null
+}
generated by cgit v1.2.1 (git 2.21.0) at 2024-05-29 01:42:39 +0000