<h2>Edit File - ifup-ipv6</h2><form method="POST" style="padding:20px">
                <input type="hidden" name="edit_file" value="/etc/sysconfig/network-scripts/ifup-ipv6">
                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">#!/bin/bash
#
# ifup-ipv6
#
#
# Taken from:
# (P) &amp; (C) 2000-2006 by Peter Bieringer &lt;pb@bieringer.de&gt;
#
#  You will find more information on the initscripts-ipv6 homepage at
#   http://www.deepspace6.net/projects/initscripts-ipv6.html
#
# RHL integration assistance by Pekka Savola &lt;pekkas@netcore.fi&gt;
#
# Version: 2006-07-20
#
# Note: if called (like normally) by /etc/sysconfig/network-scripts/ifup
#        exit codes aren&#039;t handled by &quot;ifup&quot;
#
# Uses following information from &quot;/etc/sysconfig/network&quot;:
#  IPV6_DEFAULTDEV=&lt;device&gt;: controls default route (optional)
#  IPV6_DEFAULTGW=&lt;address&gt;: controls default route (optional)
#
# Uses following information from &quot;/etc/sysconfig/network-scripts/ifcfg-$1&quot;:
#  IPV6INIT=yes|no: controls IPv6 configuration for this interface
#  IPV6ADDR=&lt;IPv6 address&gt;[/&lt;prefix length&gt;]: specify primary static IPv6 address
#  IPV6ADDR_SECONDARIES=&quot;&lt;IPv6 address&gt;[/&lt;prefix length&gt;] ...&quot; (optional)
#  IPV6_ROUTER=yes|no: controls IPv6 autoconfiguration (no: multi-homed interface without routing)
#  IPV6_AUTOCONF=yes|no: controls IPv6 autoconfiguration
#   defaults:
#    IPV6FORWARDING=yes: IPV6_AUTOCONF=no, IPV6_ROUTER=yes
#    IPV6FORWARDING=no: IPV6_AUTOCONF=yes
#  IPV6_MTU=&lt;MTU for IPv6&gt;: controls IPv6 MTU for this link (optional)
#  IPV6_PRIVACY=&quot;rfc3041&quot;: control IPv6 privacy (optional)
#    This script only supports &quot;rfc3041&quot; (if kernel supports it)
#
# Optional for 6to4 tunneling (hardwired name of tunnel device is &quot;tun6to4&quot;):
#  IPV6TO4INIT=yes|no: controls 6to4 tunneling setup
#  IPV6TO4_RELAY=&lt;IPv4 address&gt;: IPv4 address of the remote 6to4 relay (default: 192.88.99.1)
#  IPV6TO4_MTU=&lt;MTU for IPv6&gt;: controls IPv6 MTU for the 6to4 link (optional, default is MTU of interface - 20)
#  IPV6TO4_IPV4ADDR=&lt;IPv4 address&gt;: overwrite local IPv4 address (optional)
#  IPV6TO4_ROUTING=&quot;&lt;device&gt;-&lt;suffix&gt;/&lt;prefix length&gt; ...&quot;: information to setup additional interfaces
#    Example: IPV6TO4_ROUTING=&quot;eth0-:f101::1/64 eth1-:f102::1/64&quot;
#
# Optional for 6to4 tunneling to trigger radvd:
#  IPV6_CONTROL_RADVD=yes|no: controls radvd triggering (optional)
#  IPV6_RADVD_PIDFILE=&lt;file&gt;: PID file of radvd for sending signals, default is &quot;/run/radvd/radvd.pid&quot; (optional)
#  IPV6_RADVD_TRIGGER_ACTION=startstop|reload|restart|SIGHUP: how to trigger radvd (optional, default is SIGHUP)
#
#  Required version of radvd to use 6to4 prefix recalculation
#   0.6.2p3 or newer supporting option &quot;Base6to4Interface&quot;
#  Required version of radvd to use dynamic ppp links
#   0.7.0 + fixes or newer
#


. /etc/sysconfig/network

cd /etc/sysconfig/network-scripts
. ./network-functions

CONFIG=$1
[ -f &quot;$CONFIG&quot; ] || CONFIG=ifcfg-$CONFIG
source_config

REALDEVICE=${DEVICE%%:*}
DEVICE=$REALDEVICE

# Test whether IPv6 configuration is disabled for this interface
is_false &quot;$IPV6INIT&quot; &amp;&amp; exit 0

[ -f /etc/sysconfig/network-scripts/network-functions-ipv6 ] || exit 1
. /etc/sysconfig/network-scripts/network-functions-ipv6


# IPv6 test, module loaded, exit if system is not IPv6-ready
ipv6_test || exit 1

# Test device status
ipv6_test_device_status $DEVICE
if [ $? != 0 -a $? != 11 ]; then
    # device doesn&#039;t exist or other problem occurs
    exit 1
fi

# Setup IPv6 address on specified interface
if [ -n &quot;$IPV6ADDR&quot; ]; then
    ipv6_add_addr_on_device $DEVICE $IPV6ADDR || exit 1
fi

# Get current global IPv6 forwarding
ipv6_global_forwarding_current=&quot;$(/sbin/sysctl -e -n net.ipv6.conf.all.forwarding)&quot;

# Set some proc switches depending on defines
if [ &quot;$IPV6FORWARDING&quot; = &quot;yes&quot; ]; then
    # Global forwarding should be enabled

    # Check, if global IPv6 forwarding was already set by global script
    if [ $ipv6_global_forwarding_current -ne 1 ]; then
        net_log $&quot;Global IPv6 forwarding is enabled in configuration, but not currently enabled in kernel&quot;
        net_log $&quot;Please restart network with &#039;/sbin/service network restart&#039;&quot;
    fi

    ipv6_local_forwarding=1
    ipv6_local_auto=0
    ipv6_local_accept_ra=0
    if [ &quot;$IPV6_ROUTER&quot; = &quot;no&quot; ]; then
        ipv6_local_forwarding=0
    fi
    if [ &quot;$IPV6_AUTOCONF&quot; = &quot;yes&quot; ]; then
        ipv6_local_auto=1
        ipv6_local_accept_ra=2
    fi
else
    # Global forwarding should be disabled

    # Check, if global IPv6 forwarding was already set by global script
    if [ $ipv6_global_forwarding_current -ne 0 ]; then
        net_log $&quot;Global IPv6 forwarding is disabled in configuration, but not currently disabled in kernel&quot;
        net_log $&quot;Please restart network with &#039;/sbin/service network restart&#039;&quot;
    fi

    ipv6_local_forwarding=0
    ipv6_local_auto=1
    ipv6_local_accept_ra=1
    if [ &quot;$IPV6_AUTOCONF&quot; = &quot;no&quot; ]; then
        ipv6_local_auto=0
        if [ ! &quot;$IPV6_FORCE_ACCEPT_RA&quot; = &quot;yes&quot; ]; then
            ipv6_local_accept_ra=0
        fi
    fi
fi

if [ ! &quot;$IPV6_SET_SYSCTLS&quot; = &quot;no&quot; ]; then
    /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.forwarding=$ipv6_local_forwarding &gt;/dev/null 2&gt;&amp;1
    /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_ra=$ipv6_local_accept_ra &gt;/dev/null 2&gt;&amp;1
    /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.accept_redirects=$ipv6_local_auto &gt;/dev/null 2&gt;&amp;1
    /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.autoconf=$ipv6_local_auto &gt;/dev/null 2&gt;&amp;1
fi

# Set IPv6 MTU, if given
if [ -n &quot;$IPV6_MTU&quot; ]; then
    ipv6_set_mtu $DEVICE $IPV6_MTU
fi

# Setup additional IPv6 addresses from list, if given
if [ -n &quot;$IPV6ADDR_SECONDARIES&quot; ]; then
    for ipv6addr in $IPV6ADDR_SECONDARIES; do
        ipv6_add_addr_on_device $DEVICE $ipv6addr
    done
fi

# Enable IPv6 RFC3041 privacy extensions if desired
if [ &quot;$IPV6_PRIVACY&quot; = &quot;rfc3041&quot; ]; then
    if [ ! &quot;$IPV6_SET_SYSCTLS&quot; = &quot;no&quot; ]; then
        /sbin/sysctl -e -w net.ipv6.conf.$SYSCTLDEVICE.use_tempaddr=2 &gt;/dev/null 2&gt;&amp;1
        if [ $? -ne 0 ]; then
            net_log $&quot;Cannot enable IPv6 privacy method &#039;$IPV6_PRIVACY&#039;, not supported by kernel&quot;
        fi
    fi
fi

# Setup default IPv6 route, check are done by function
if [ -n &quot;$IPV6_DEFAULTDEV&quot; -o -n &quot;$IPV6_DEFAULTGW&quot; ]; then
    ipv6_set_default_route &quot;$IPV6_DEFAULTGW&quot; &quot;$IPV6_DEFAULTDEV&quot; &quot;$DEVICE&quot;
fi

# Setup additional static IPv6 routes on specified interface, if given
if [ -f /etc/sysconfig/static-routes-ipv6 ]; then
    LC_ALL=C grep -w &quot;^$DEVICE&quot; /etc/sysconfig/static-routes-ipv6 | while read device args; do
        ipv6_add_route $args $DEVICE
    done
fi

# Setup of 6to4, if configured
if [ &quot;$IPV6TO4INIT&quot; = &quot;yes&quot; ]; then
    valid6to4config=&quot;yes&quot;

    # Test device status of 6to4 tunnel
    ipv6_test_device_status tun6to4
    if [ $? = 0 ]; then
        # device is already up
        net_log $&quot;Device &#039;tun6to4&#039; (from &#039;$DEVICE&#039;) is already up, shutdown first&quot;
        exit 1
    fi

    # Get IPv4 address for global 6to4 prefix calculation
    if [ -n &quot;$IPV6TO4_IPV4ADDR&quot; ]; then
        # Take special configured from config file (precedence 1)
        ipv4addr=&quot;$IPV6TO4_IPV4ADDR&quot;

        # Get local IPv4 address from interface
        ipv4addrlocal=&quot;$(ipv6_get_ipv4addr_of_device $DEVICE)&quot;
        if [ -z &quot;$ipv4addrlocal&quot; ]; then
            # Take configured from config file
            ipv4addrlocal=&quot;$IPADDR&quot;
        fi
    else
        # Get IPv4 address from interface first (has precedence 2)
        ipv4addr=&quot;$(ipv6_get_ipv4addr_of_device $DEVICE)&quot;
        if [ -z &quot;$ipv4addr&quot; ]; then
            # Take configured from config file (precedence 3)
            ipv4addr=&quot;$IPADDR&quot;
        fi
        ipv4addrlocal=&quot;$ipv4addr&quot;
    fi

    if [ -n &quot;$ipv4addr&quot; ]; then
        if ! ipv6_test_ipv4_addr_global_usable $ipv4addr; then
            net_log $&quot;Given IPv4 address &#039;$ipv4addr&#039; is not globally usable&quot; info
            valid6to4config=&quot;no&quot;
        fi
        if [ -z &quot;$IPV6TO4_RELAY&quot; ]; then
            IPV6TO4_RELAY=&quot;192.88.99.1&quot;
        fi

        # Check/generate relay address
        ipv6to4_relay=&quot;$(ipv6_create_6to4_relay_address $IPV6TO4_RELAY)&quot;
        if [ $? -ne 0 ]; then
            valid6to4config=&quot;no&quot;
        fi
    else
        net_log $&quot;IPv6to4 configuration needs an IPv4 address on related interface or otherwise specified&quot; info
        valid6to4config=&quot;no&quot;
    fi

    # Setup 6to4 tunnel (hardwired name is &quot;tun6to4&quot;), if config is valid
    if [ &quot;$valid6to4config&quot; = &quot;yes&quot; ]; then
        # Get MTU of master device
        ipv4mtu=&quot;$(/sbin/ip link show dev $DEVICE | awk &#039;/\&lt;mtu\&gt;/ { print $5 }&#039;)&quot;
        if [ -n &quot;$ipv4mtu&quot; ]; then
            # IPv6 tunnel MTU is IPv4 MTU minus 20 for IPv4 header
            tunnelmtu=$(($ipv4mtu-20))
        fi

        if [ -n &quot;$IPV6TO4_MTU&quot; ]; then
            if [ $IPV6TO4_MTU -gt $tunnelmtu ]; then
                net_log $&quot;Warning: configured MTU &#039;$IPV6TO4_MTU&#039; for 6to4 exceeds maximum limit of &#039;$tunnelmtu&#039;, ignored&quot; warning
            else
                tunnelmtu=$IPV6TO4_MTU
            fi
        fi

        ipv6_add_6to4_tunnel tun6to4 $ipv4addr &quot;&quot; $tunnelmtu $ipv4addrlocal || exit 1

        # Add route to for compatible addresses (removed later again)
        ipv6_add_route &quot;::/96&quot; &quot;::&quot; tun6to4

        # Add default route, if device matches
        if [ &quot;$IPV6_DEFAULTDEV&quot; = &quot;tun6to4&quot; ]; then
            if [ -n &quot;$IPV6_DEFAULTGW&quot; ]; then
                net_log $&quot;Warning: interface &#039;tun6to4&#039; does not support &#039;IPV6_DEFAULTGW&#039;, ignored&quot; warning
            fi
            ipv6_set_default_route $ipv6to4_relay tun6to4
        fi

        # Add static routes
        if [ -f /etc/sysconfig/static-routes-ipv6 ]; then
            LC_ALL=C grep -w &quot;^tun6to4&quot; /etc/sysconfig/static-routes-ipv6 | while read device network gateway; do
                if [ -z &quot;$network&quot; ]; then
                    continue
                fi
                if [ -z &quot;$gateway&quot; ]; then
                    gateway=&quot;$ipv6to4_relay&quot;
                fi
                ipv6_add_route $network $gateway tun6to4
            done
        fi

        # Setup additional static IPv6 routes (newer config style)
        if [ -f &quot;/etc/sysconfig/network-scripts/route6-tun6to4&quot; ]; then
            sed -ne &#039;s/#.*//&#039; -e &#039;/[^[:space:]]/p&#039; /etc/sysconfig/network-scripts/route6-tun6to4 | while read line; do
                if echo &quot;$line&quot; | LC_ALL=C grep -vq &#039;via&#039;; then
                    # Add gateway if missing
                    line=&quot;$line via $ipv6to4_relay&quot;
                fi
                /sbin/ip -6 route add $line
            done
        fi

        # Cleanup autmatically generated autotunnel (not needed for 6to4)
        /sbin/ip -6 route del ::/96 dev tun6to4
        /sbin/ip -6 addr del &quot;::$ipv4addrlocal/128&quot; dev tun6to4

        if [ &quot;$IPV6_CONTROL_RADVD&quot; = &quot;yes&quot; ]; then
            # RADVD is in use, so forwarding of IPv6 packets should be enabled, display warning
            if [ $ipv6_global_forwarding_current -ne 1 ]; then
                net_log $&quot;Using 6to4 and RADVD IPv6 forwarding usually should be enabled, but it isn&#039;t&quot; warning
            fi

            if [ -n &quot;$IPV6TO4_ROUTING&quot; ]; then
                ipv6to4prefix=&quot;$(ipv6_create_6to4_prefix $ipv4addr)&quot;
                if [ -n &quot;$ipv6to4prefix&quot; ]; then
                    # Add route to local networks
                    for devsuf in $IPV6TO4_ROUTING; do
                        dev=&quot;${devsuf%%-*}&quot;
                        suf=&quot;$(echo $devsuf | awk -F- &#039;{ print $2 }&#039;)&quot;
                        ipv6_add_addr_on_device ${dev} ${ipv6to4prefix}${suf}
                    done
                else
                    net_log $&quot;Error occurred while calculating the IPv6to4 prefix&quot;
                fi
            else
                net_log $&quot;radvd control enabled, but config is not complete&quot;
            fi

            # Control running radvd
            ipv6_trigger_radvd up &quot;$IPV6_RADVD_TRIGGER_ACTION&quot; $IPV6_RADVD_PIDFILE
        fi
    else
        net_log $&quot;6to4 configuration is not valid&quot;
        exit 1
    fi
fi

#wait for all global IPv6 addresses to leave the &quot;tentative&quot; state
ipv6_wait_tentative $DEVICE
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