<h2>Edit File - dhclient-script.sh</h2><form method="POST" style="padding:20px">
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                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">#!/bin/sh

PATH=/usr/sbin:/usr/bin:/sbin:/bin

type getarg &gt;/dev/null 2&gt;&amp;1 || . /lib/dracut-lib.sh
type ip_to_var &gt;/dev/null 2&gt;&amp;1 || . /lib/net-lib.sh

# We already need a set netif here
netif=$interface

setup_interface() {
    ip=$new_ip_address
    mtu=$new_interface_mtu
    mask=$new_subnet_mask
    bcast=$new_broadcast_address
    gw=${new_routers%%,*}
    domain=$new_domain_name
    search=$(printf -- &quot;$new_domain_search&quot;)
    namesrv=$new_domain_name_servers
    hostname=$new_host_name
    [ -n &quot;$new_dhcp_lease_time&quot; ] &amp;&amp; lease_time=$new_dhcp_lease_time
    [ -n &quot;$new_max_life&quot; ] &amp;&amp; lease_time=$new_max_life
    preferred_lft=$lease_time
    [ -n &quot;$new_preferred_life&quot; ] &amp;&amp; preferred_lft=$new_preferred_life

    [ -f /tmp/net.$netif.override ] &amp;&amp; . /tmp/net.$netif.override

    # Taken from debian dhclient-script:
    # The 576 MTU is only used for X.25 and dialup connections
    # where the admin wants low latency.  Such a low MTU can cause
    # problems with UDP traffic, among other things.  As such,
    # disallow MTUs from 576 and below by default, so that broken
    # MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
    if [ -n &quot;$mtu&quot; ] &amp;&amp; [ $mtu -gt 576 ] ; then
        if ! ip link set $netif mtu $mtu ; then
            ip link set $netif down
            ip link set $netif mtu $mtu
            linkup $netif
        fi
    fi

    ip addr add $ip${mask:+/$mask} ${bcast:+broadcast $bcast} dev $netif \
        ${lease_time:+valid_lft $lease_time} \
        ${preferred_lft:+preferred_lft ${preferred_lft}}

    if [ -n &quot;$gw&quot; ] ; then
        if [ &quot;$mask&quot; = &quot;255.255.255.255&quot; ] ; then
            # point-to-point connection =&gt; set explicit route to gateway
            echo ip route add $gw dev $netif &gt; /tmp/net.$netif.gw
        fi

        echo &quot;$gw&quot; | {
            IFS=&#039; &#039; read -r main_gw other_gw
            echo ip route replace default via $main_gw dev $netif &gt;&gt; /tmp/net.$netif.gw
            if [ -n &quot;$other_gw&quot; ] ; then
                for g in $other_gw; do
                    echo ip route add default via $g dev $netif &gt;&gt; /tmp/net.$netif.gw
                done
            fi
        }
    fi

    if getargbool 1 rd.peerdns; then
        [ -n &quot;${search}${domain}&quot; ] &amp;&amp; echo &quot;search $search $domain&quot; &gt; /tmp/net.$netif.resolv.conf
        if  [ -n &quot;$namesrv&quot; ] ; then
            for s in $namesrv; do
                echo nameserver $s
            done
        fi &gt;&gt; /tmp/net.$netif.resolv.conf
    fi
    # Note: hostname can be fqdn OR short hostname, so chop off any
    # trailing domain name and explicity add any domain if set.
    [ -n &quot;$hostname&quot; ] &amp;&amp; echo &quot;echo ${hostname%.$domain}${domain:+.$domain} &gt; /proc/sys/kernel/hostname&quot; &gt; /tmp/net.$netif.hostname
}

setup_interface6() {
    domain=$new_domain_name
    search=$(printf -- &quot;$new_dhcp6_domain_search&quot;)
    namesrv=$new_dhcp6_name_servers
    hostname=$new_host_name
    [ -n &quot;$new_dhcp_lease_time&quot; ] &amp;&amp; lease_time=$new_dhcp_lease_time
    [ -n &quot;$new_max_life&quot; ] &amp;&amp; lease_time=$new_max_life
    preferred_lft=$lease_time
    [ -n &quot;$new_preferred_life&quot; ] &amp;&amp; preferred_lft=$new_preferred_life

    [ -f /tmp/net.$netif.override ] &amp;&amp; . /tmp/net.$netif.override

    ip -6 addr add ${new_ip6_address}/${new_ip6_prefixlen} \
        dev ${netif} scope global \
        ${lease_time:+valid_lft $lease_time} \
        ${preferred_lft:+preferred_lft ${preferred_lft}}

    if getargbool 1 rd.peerdns; then
        [ -n &quot;${search}${domain}&quot; ] &amp;&amp; echo &quot;search $search $domain&quot; &gt; /tmp/net.$netif.resolv.conf
        if  [ -n &quot;$namesrv&quot; ] ; then
            for s in $namesrv; do
                echo nameserver $s
            done
        fi &gt;&gt; /tmp/net.$netif.resolv.conf
    fi

    # Note: hostname can be fqdn OR short hostname, so chop off any
    # trailing domain name and explicity add any domain if set.
    [ -n &quot;$hostname&quot; ] &amp;&amp; echo &quot;echo ${hostname%.$domain}${domain:+.$domain} &gt; /proc/sys/kernel/hostname&quot; &gt; /tmp/net.$netif.hostname
}

parse_option_121() {
    while [ $# -ne 0 ]; do
        mask=&quot;$1&quot;
        shift

        # Is the destination a multicast group?
        if [ $1 -ge 224 -a $1 -lt 240 ]; then
            multicast=1
        else
            multicast=0
        fi

        # Parse the arguments into a CIDR net/mask string
        if [ $mask -gt 24 ]; then
            destination=&quot;$1.$2.$3.$4/$mask&quot;
            shift; shift; shift; shift
        elif [ $mask -gt 16 ]; then
            destination=&quot;$1.$2.$3.0/$mask&quot;
            shift; shift; shift
        elif [ $mask -gt 8 ]; then
            destination=&quot;$1.$2.0.0/$mask&quot;
            shift; shift
        elif [ $mask -gt 0 ]; then
            destination=&quot;$1.0.0.0/$mask&quot;
            shift
        else
            destination=&quot;0.0.0.0/$mask&quot;
        fi

        # Read the gateway
        gateway=&quot;$1.$2.$3.$4&quot;
        shift; shift; shift; shift

        # Multicast routing on Linux
        #  - If you set a next-hop address for a multicast group, this breaks with Cisco switches
        #  - If you simply leave it link-local and attach it to an interface, it works fine.
        if [ $multicast -eq 1 -o &quot;$gateway&quot; = &quot;0.0.0.0&quot; ]; then
            temp_result=&quot;$destination dev $interface&quot;
        else
            temp_result=&quot;$destination via $gateway dev $interface&quot;
        fi

        echo &quot;/sbin/ip route add $temp_result&quot;
    done
}


case $reason in
    PREINIT)
        echo &quot;dhcp: PREINIT $netif up&quot;
        linkup $netif
        ;;

    PREINIT6)
        echo &quot;dhcp: PREINIT6 $netif up&quot;
        linkup $netif
        wait_for_ipv6_dad_link $netif
        ;;

    BOUND)
        echo &quot;dhcp: BOND setting $netif&quot;
        unset layer2
        if [ -f /sys/class/net/$netif/device/layer2 ]; then
            read layer2 &lt; /sys/class/net/$netif/device/layer2
        fi
        if [ &quot;$layer2&quot; != &quot;0&quot; ]; then
            if command -v arping2 &gt;/dev/null; then
                if arping2 -q -C 1 -c 2 -I $netif -0 $new_ip_address ; then
                    warn &quot;Duplicate address detected for $new_ip_address while doing dhcp. retrying&quot;
                    exit 1
                fi
            else
                if ! arping -f -q -D -c 2 -I $netif $new_ip_address ; then
                    warn &quot;Duplicate address detected for $new_ip_address while doing dhcp. retrying&quot;
                    exit 1
                fi
            fi
        fi
        unset layer2
        setup_interface
        set | while read line || [ -n &quot;$line&quot; ]; do
            [ &quot;${line#new_}&quot; = &quot;$line&quot; ] &amp;&amp; continue
            echo &quot;$line&quot;
        done &gt;/tmp/dhclient.$netif.dhcpopts

        {
            echo &#039;. /lib/net-lib.sh&#039;
            echo &quot;setup_net $netif&quot;
            if [ -n &quot;$new_classless_static_routes&quot; ]; then
                OLDIFS=&quot;$IFS&quot;
                IFS=&quot;.$IFS&quot;
                parse_option_121 $new_classless_static_routes
                IFS=&quot;$OLDIFS&quot;
            fi
            echo &quot;source_hook initqueue/online $netif&quot;
            [ -e /tmp/net.$netif.manualup ] || echo &quot;/sbin/netroot $netif&quot;
            echo &quot;rm -f -- $hookdir/initqueue/setup_net_$netif.sh&quot;
        } &gt; $hookdir/initqueue/setup_net_$netif.sh

        echo &quot;[ -f /tmp/net.$netif.did-setup ]&quot; &gt; $hookdir/initqueue/finished/dhclient-$netif.sh
        &gt;/tmp/net.$netif.up
        if [ -e /sys/class/net/${netif}/address ]; then
            &gt; /tmp/net.$(cat /sys/class/net/${netif}/address).up
        fi

        ;;

    RENEW|REBIND)
        unset lease_time
        [ -n &quot;$new_dhcp_lease_time&quot; ] &amp;&amp; lease_time=$new_dhcp_lease_time
        [ -n &quot;$new_max_life&quot; ] &amp;&amp; lease_time=$new_max_life
        preferred_lft=$lease_time
        [ -n &quot;$new_preferred_life&quot; ] &amp;&amp; preferred_lft=$new_preferred_life
        ip -4 addr change ${new_ip_address}/${new_subnet_mask} broadcast ${new_broadcast_address} dev ${interface} \
           ${lease_time:+valid_lft $lease_time} ${preferred_lft:+preferred_lft ${preferred_lft}} \
           &gt;/dev/null 2&gt;&amp;1
        ;;

    BOUND6)
        echo &quot;dhcp: BOND6 setting $netif&quot;
        setup_interface6

        set | while read line || [ -n &quot;$line&quot; ]; do
            [ &quot;${line#new_}&quot; = &quot;$line&quot; ] &amp;&amp; continue
            echo &quot;$line&quot;
        done &gt;/tmp/dhclient.$netif.dhcpopts

        {
            echo &#039;. /lib/net-lib.sh&#039;
            echo &quot;setup_net $netif&quot;
            echo &quot;source_hook initqueue/online $netif&quot;
            [ -e /tmp/net.$netif.manualup ] || echo &quot;/sbin/netroot $netif&quot;
            echo &quot;rm -f -- $hookdir/initqueue/setup_net_$netif.sh&quot;
        } &gt; $hookdir/initqueue/setup_net_$netif.sh

        echo &quot;[ -f /tmp/net.$netif.did-setup ]&quot; &gt; $hookdir/initqueue/finished/dhclient-$netif.sh
        &gt;/tmp/net.$netif.up
        if [ -e /sys/class/net/${netif}/address ]; then
            &gt; /tmp/net.$(cat /sys/class/net/${netif}/address).up
        fi
        ;;

    RENEW6|REBIND6)
        unset lease_time
        [ -n &quot;$new_dhcp_lease_time&quot; ] &amp;&amp; lease_time=$new_dhcp_lease_time
        [ -n &quot;$new_max_life&quot; ] &amp;&amp; lease_time=$new_max_life
        preferred_lft=$lease_time
        [ -n &quot;$new_preferred_life&quot; ] &amp;&amp; preferred_lft=$new_preferred_life
        ip -6 addr change ${new_ip6_address}/${new_ip6_prefixlen} dev ${interface} scope global \
           ${lease_time:+valid_lft $lease_time} ${preferred_lft:+preferred_lft ${preferred_lft}} \
           &gt;/dev/null 2&gt;&amp;1
        ;;

    *) echo &quot;dhcp: $reason&quot;;;
esac

exit 0
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