Gecko [ gandhischool.edu.np ]

Name	Size	Permission
aa-remove-unknown	3 KB	-rwxr-xr-x
aa-status	8.63 KB	-rwxr-xr-x
aa-teardown	139 B	-rwxr-xr-x
add-shell	860 B	-rwxr-xr-x
addgroup	36.9 KB	-rwxr-xr-x
adduser	36.9 KB	-rwxr-xr-x
agetty	67.38 KB	-rwxr-xr-x
apparmor_parser	1.46 MB	-rwxr-xr-x
apparmor_status	8.63 KB	-rwxr-xr-x
arpd	78.27 KB	-rwxr-xr-x
arptables	215.32 KB	-rwxr-xr-x
arptables-nft	215.32 KB	-rwxr-xr-x
arptables-nft-restore	215.32 KB	-rwxr-xr-x
arptables-nft-save	215.32 KB	-rwxr-xr-x
arptables-restore	215.32 KB	-rwxr-xr-x
arptables-save	215.32 KB	-rwxr-xr-x
badblocks	34.32 KB	-rwxr-xr-x
blkdeactivate	14.49 KB	-rwxr-xr-x
blkdiscard	34.23 KB	-rwxr-xr-x
blkid	118.26 KB	-rwxr-xr-x
blkzone	70.23 KB	-rwxr-xr-x
blockdev	66.23 KB	-rwxr-xr-x
bridge	102.3 KB	-rwxr-xr-x
capsh	30.3 KB	-rwxr-xr-x
cfdisk	102.59 KB	-rwxr-xr-x
chcpu	46.23 KB	-rwxr-xr-x
chgpasswd	66.2 KB	-rwxr-xr-x
chmem	62.23 KB	-rwxr-xr-x
chpasswd	58.2 KB	-rwxr-xr-x
chroot	42.34 KB	-rwxr-xr-x
cpgr	60.34 KB	-rwxr-xr-x
cppw	60.34 KB	-rwxr-xr-x
cryptdisks_start	1.51 KB	-rwxr-xr-x
cryptdisks_stop	844 B	-rwxr-xr-x
cryptsetup	135.54 KB	-rwxr-xr-x
cryptsetup-reencrypt	105.32 KB	-rwxr-xr-x
ctrlaltdel	38.23 KB	-rwxr-xr-x
debugfs	225.8 KB	-rwxr-xr-x
delgroup	16.11 KB	-rwxr-xr-x
deluser	16.11 KB	-rwxr-xr-x
depmod	166.36 KB	-rwxr-xr-x
devlink	150.47 KB	-rwxr-xr-x
dhclient	508.98 KB	-rwxr-xr-x
dhclient-script	15.92 KB	-rwxr-xr-x
dmsetup	171.02 KB	-rwxr-xr-x
dmstats	171.02 KB	-rwxr-xr-x
dosfsck	58.08 KB	-rwxr-xr-x
dosfslabel	54.08 KB	-rwxr-xr-x
dumpe2fs	30.38 KB	-rwxr-xr-x
e2freefrag	18.38 KB	-rwxr-xr-x
e2fsck	327.21 KB	-rwxr-xr-x
e2image	42.38 KB	-rwxr-xr-x
e2label	106.55 KB	-rwxr-xr-x
e2mmpstatus	30.38 KB	-rwxr-xr-x
e2scrub	7.13 KB	-rwxr-xr-x
e2scrub_all	5.27 KB	-rwxr-xr-x
e2undo	22.38 KB	-rwxr-xr-x
e4crypt	30.38 KB	-rwxr-xr-x
e4defrag	34.3 KB	-rwxr-xr-x
ebtables	215.32 KB	-rwxr-xr-x
ebtables-nft	215.32 KB	-rwxr-xr-x
ebtables-nft-restore	215.32 KB	-rwxr-xr-x
ebtables-nft-save	215.32 KB	-rwxr-xr-x
ebtables-restore	215.32 KB	-rwxr-xr-x
ebtables-save	215.32 KB	-rwxr-xr-x
faillock	14.15 KB	-rwxr-xr-x
fatlabel	54.08 KB	-rwxr-xr-x
fdformat	34.23 KB	-rwxr-xr-x
fdisk	150.27 KB	-rwxr-xr-x
filefrag	18.33 KB	-rwxr-xr-x
findfs	14.23 KB	-rwxr-xr-x
fsck	54.27 KB	-rwxr-xr-x
fsck.cramfs	38.26 KB	-rwxr-xr-x
fsck.ext2	327.21 KB	-rwxr-xr-x
fsck.ext3	327.21 KB	-rwxr-xr-x
fsck.ext4	327.21 KB	-rwxr-xr-x
fsck.fat	58.08 KB	-rwxr-xr-x
fsck.minix	122.25 KB	-rwxr-xr-x
fsck.msdos	58.08 KB	-rwxr-xr-x
fsck.vfat	58.08 KB	-rwxr-xr-x
fsfreeze	14.23 KB	-rwxr-xr-x
fstab-decode	14.3 KB	-rwxr-xr-x
fstrim	70.23 KB	-rwxr-xr-x
genl	82.29 KB	-rwxr-xr-x
getcap	14.3 KB	-rwxr-xr-x
getpcaps	14.3 KB	-rwxr-xr-x
getty	67.38 KB	-rwxr-xr-x
groupadd	90.95 KB	-rwxr-xr-x
groupdel	86.77 KB	-rwxr-xr-x
groupmems	62.24 KB	-rwxr-xr-x
groupmod	94.86 KB	-rwxr-xr-x
grpck	62.18 KB	-rwxr-xr-x
grpconv	58.05 KB	-rwxr-xr-x
grpunconv	58.05 KB	-rwxr-xr-x
halt	1.06 MB	-rwxr-xr-x
hwclock	102.35 KB	-rwxr-xr-x
iconvconfig	30.4 KB	-rwxr-xr-x
init	1.76 MB	-rwxr-xr-x
insmod	166.36 KB	-rwxr-xr-x
installkernel	2.58 KB	-rwxr-xr-x
integritysetup	60.23 KB	-rwxr-xr-x
invoke-rc.d	16.64 KB	-rwxr-xr-x
ip	702.05 KB	-rwxr-xr-x
ip6tables	96.97 KB	-rwxr-xr-x
ip6tables-apply	6.89 KB	-rwxr-xr-x
ip6tables-legacy	96.97 KB	-rwxr-xr-x
ip6tables-legacy-restore	96.97 KB	-rwxr-xr-x
ip6tables-legacy-save	96.97 KB	-rwxr-xr-x
ip6tables-nft	215.32 KB	-rwxr-xr-x
ip6tables-nft-restore	215.32 KB	-rwxr-xr-x
ip6tables-nft-save	215.32 KB	-rwxr-xr-x
ip6tables-restore	96.97 KB	-rwxr-xr-x
ip6tables-restore-translate	215.32 KB	-rwxr-xr-x
ip6tables-save	96.97 KB	-rwxr-xr-x
ip6tables-translate	215.32 KB	-rwxr-xr-x
iptables	96.97 KB	-rwxr-xr-x
iptables-apply	6.89 KB	-rwxr-xr-x
iptables-legacy	96.97 KB	-rwxr-xr-x
iptables-legacy-restore	96.97 KB	-rwxr-xr-x
iptables-legacy-save	96.97 KB	-rwxr-xr-x
iptables-nft	215.32 KB	-rwxr-xr-x
iptables-nft-restore	215.32 KB	-rwxr-xr-x
iptables-nft-save	215.32 KB	-rwxr-xr-x
iptables-restore	96.97 KB	-rwxr-xr-x
iptables-restore-translate	215.32 KB	-rwxr-xr-x
iptables-save	96.97 KB	-rwxr-xr-x
iptables-translate	215.32 KB	-rwxr-xr-x
isosize	30.23 KB	-rwxr-xr-x
killall5	26.38 KB	-rwxr-xr-x
ldattach	34.23 KB	-rwxr-xr-x
ldconfig	387 B	-rwxr-xr-x
ldconfig.real	1 MB	-rwxr-xr-x
logsave	14.16 KB	-rwxr-xr-x
losetup	110.34 KB	-rwxr-xr-x
lsmod	166.36 KB	-rwxr-xr-x
luksformat	3.32 KB	-rwxr-xr-x
mkdosfs	34.5 KB	-rwxr-xr-x
mke2fs	134.62 KB	-rwxr-xr-x
mkfs	14.23 KB	-rwxr-xr-x
mkfs.bfs	34.23 KB	-rwxr-xr-x
mkfs.cramfs	42.16 KB	-rwxr-xr-x
mkfs.ext2	134.62 KB	-rwxr-xr-x
mkfs.ext3	134.62 KB	-rwxr-xr-x
mkfs.ext4	134.62 KB	-rwxr-xr-x
mkfs.fat	34.5 KB	-rwxr-xr-x
mkfs.minix	106.23 KB	-rwxr-xr-x
mkfs.msdos	34.5 KB	-rwxr-xr-x
mkfs.vfat	34.5 KB	-rwxr-xr-x
mkhomedir_helper	22.17 KB	-rwxr-xr-x
mklost+found	14.3 KB	-rwxr-xr-x
mkswap	106.23 KB	-rwxr-xr-x
modinfo	166.36 KB	-rwxr-xr-x
modprobe	166.36 KB	-rwxr-xr-x
netplan	798 B	-rwxr-xr-x
newusers	98.8 KB	-rwxr-xr-x
nfnl_osf	18.3 KB	-rwxr-xr-x
nologin	14.3 KB	-rwxr-xr-x
pam-auth-update	19.86 KB	-rwxr-xr-x
pam_extrausers_chkpwd	42.16 KB	-rwxr-sr-x
pam_extrausers_update	42.16 KB	-rwxr-xr-x
pam_getenv	2.82 KB	-rwxr-xr-x
pam_tally	14.16 KB	-rwxr-xr-x
pam_tally2	18.16 KB	-rwxr-xr-x
pam_timestamp_check	14.15 KB	-rwxr-xr-x
pivot_root	14.23 KB	-rwxr-xr-x
poweroff	1.06 MB	-rwxr-xr-x
pwck	58.17 KB	-rwxr-xr-x
pwconv	54.05 KB	-rwxr-xr-x
pwunconv	54.05 KB	-rwxr-xr-x
raw	14.23 KB	-rwxr-xr-x
readprofile	22.26 KB	-rwxr-xr-x
reboot	1.06 MB	-rwxr-xr-x
remove-shell	904 B	-rwxr-xr-x
resize2fs	66.38 KB	-rwxr-xr-x
rfkill	50.23 KB	-rwxr-xr-x
rmmod	166.36 KB	-rwxr-xr-x
rmt	58.55 KB	-rwxr-xr-x
rmt-tar	58.55 KB	-rwxr-xr-x
rtacct	48.29 KB	-rwxr-xr-x
rtcwake	46.23 KB	-rwxr-xr-x
rtmon	78.24 KB	-rwxr-xr-x
runlevel	1.06 MB	-rwxr-xr-x
runuser	66.23 KB	-rwxr-xr-x
service	9.04 KB	-rwxr-xr-x
setcap	14.3 KB	-rwxr-xr-x
sfdisk	138.23 KB	-rwxr-xr-x
shadowconfig	885 B	-rwxr-xr-x
shutdown	1.06 MB	-rwxr-xr-x
sshd	863.79 KB	-rwxr-xr-x
start-stop-daemon	47.32 KB	-rwxr-xr-x
sulogin	50.23 KB	-rwxr-xr-x
swaplabel	18.23 KB	-rwxr-xr-x
swapoff	22.23 KB	-rwxr-xr-x
swapon	50.23 KB	-rwxr-xr-x
switch_root	14.23 KB	-rwxr-xr-x
sysctl	30.23 KB	-rwxr-xr-x
tarcat	936 B	-rwxr-xr-x
tc	529.45 KB	-rwxr-xr-x
telinit	1.06 MB	-rwxr-xr-x
tipc	126.23 KB	-rwxr-xr-x
tune2fs	106.55 KB	-rwxr-xr-x
tzconfig	106 B	-rwxr-xr-x
unix_chkpwd	42.15 KB	-rwxr-sr-x
unix_update	42.15 KB	-rwxr-xr-x
update-ca-certificates	5.29 KB	-rwxr-xr-x
update-mime	9.18 KB	-rwxr-xr-x
update-passwd	34.56 KB	-rwxr-xr-x
update-rc.d	16.76 KB	-rwxr-xr-x
useradd	143.71 KB	-rwxr-xr-x
userdel	98.89 KB	-rwxr-xr-x
usermod	139.49 KB	-rwxr-xr-x
veritysetup	51.82 KB	-rwxr-xr-x
vigr	68.55 KB	-rwxr-xr-x
vipw	68.55 KB	-rwxr-xr-x
visudo	218.2 KB	-rwxr-xr-x
wipefs	46.23 KB	-rwxr-xr-x
wpa_action	1.69 KB	-rwxr-xr-x
wpa_cli	152.22 KB	-rwxr-xr-x
wpa_supplicant	2.77 MB	-rwxr-xr-x
xtables-legacy-multi	96.97 KB	-rwxr-xr-x
xtables-monitor	215.32 KB	-rwxr-xr-x
xtables-nft-multi	215.32 KB	-rwxr-xr-x
zic	62.29 KB	-rwxr-xr-x
zramctl	114.34 KB	-rwxr-xr-x

Code Editor : dhclient-script

#!/bin/sh

# Explicitly set the PATH to that of ENV_SUPATH in /etc/login.defs and unset
# various other variables. We need to do this so /sbin/dhclient cannot abuse
# the environment to escape AppArmor confinement via this script
# (LP: #1045986). This can be removed once AppArmor supports environment
# filtering (LP: #1045985)
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
export ENV=
export BASH_ENV=
export CDPATH=
export GLOBIGNORE=
export BASH_XTRACEFD=

# dhclient-script for Linux. Dan Halbert, March, 1997.
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
# Modified for Debian.  Matt Zimmerman and Eloy Paris, December 2003
# Modified to remove useless tests for antiquated kernel versions that
# this doesn't even work with anyway, and introduces a dependency on /usr
# being mounted, which causes cosmetic errors on hosts that NFS mount /usr
# Andrew Pollock, February 2005
# Modified to work on point-to-point links. Andrew Pollock, June 2005
# Modified to support passing the parameters called with to the hooks. Andrew Pollock, November 2005

# The alias handling in here probably still sucks. -mdz

# log an error.
error() { logger -p daemon.err "$@"; }

# wait for given file to be writable
wait_for_rw() {
    local file=$1
    # Find out whether we are going to mount / rw
    exec 9>&0 </etc/fstab
    rootmode=rw
    while read dev mnt type opts dump pass junk; do
        [ "$mnt" != / ] && continue
        case "$opts" in
            ro|ro,*|*,ro|*,ro,*)
               rootmode=ro
               ;;
             esac
     done
     exec 0>&9 9>&-

# Wait for $file to become writable
    if [ "$rootmode" = "rw" ]; then
        while ! { : >> "$file"; } 2>/dev/null; do
            sleep 0.1
        done
    fi
}

# update /etc/resolv.conf based on received values
make_resolv_conf() {
    local new_resolv_conf

# DHCPv4
    if [ -n "$new_domain_search" ] || [ -n "$new_domain_name" ] ||
       [ -n "$new_domain_name_servers" ]; then
        resolv_conf=$(readlink -f "/etc/resolv.conf" 2>/dev/null) ||
            resolv_conf="/etc/resolv.conf"

new_resolv_conf="${resolv_conf}.dhclient-new.$$"
        wait_for_rw "$new_resolv_conf"
        rm -f $new_resolv_conf

if [ -n "$new_domain_name" ]; then
            echo domain ${new_domain_name%% *} >>$new_resolv_conf
        fi

if [ -n "$new_domain_search" ]; then
            if [ -n "$new_domain_name" ]; then
                domain_in_search_list=""
                for domain in $new_domain_search; do
                    if [ "$domain" = "${new_domain_name}" ] ||
                       [ "$domain" = "${new_domain_name}." ]; then
                        domain_in_search_list="Yes"
                    fi
                done
                if [ -z "$domain_in_search_list" ]; then
                    new_domain_search="$new_domain_name $new_domain_search"
                fi
            fi
            echo "search ${new_domain_search}" >> $new_resolv_conf
        elif [ -n "$new_domain_name" ]; then
            echo "search ${new_domain_name}" >> $new_resolv_conf
        fi

if [ -n "$new_domain_name_servers" ]; then
            for nameserver in $new_domain_name_servers; do
                echo nameserver $nameserver >>$new_resolv_conf
            done
        else # keep 'old' nameservers
            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p $resolv_conf >>$new_resolv_conf
        fi

if [ -f $resolv_conf ]; then
	    chown --reference=$resolv_conf $new_resolv_conf
	    chmod --reference=$resolv_conf $new_resolv_conf
	fi
        mv -f $new_resolv_conf $resolv_conf
    # DHCPv6
    elif [ -n "$new_dhcp6_domain_search" ] || [ -n "$new_dhcp6_name_servers" ]; then
        resolv_conf=$(readlink -f "/etc/resolv.conf" 2>/dev/null) ||
            resolv_conf="/etc/resolv.conf"

new_resolv_conf="${resolv_conf}.dhclient-new.$$"
        wait_for_rw "$new_resolv_conf"
        rm -f $new_resolv_conf

if [ -n "$new_dhcp6_domain_search" ]; then
            echo "search ${new_dhcp6_domain_search}" >> $new_resolv_conf
        fi

if [ -n "$new_dhcp6_name_servers" ]; then
            for nameserver in $new_dhcp6_name_servers; do
                # append %interface to link-local-address nameservers
                if [ "${nameserver##fe80::}" != "$nameserver" ] ||
                   [ "${nameserver##FE80::}" != "$nameserver" ]; then
                    nameserver="${nameserver}%${interface}"
                fi
                echo nameserver $nameserver >>$new_resolv_conf
            done
        else # keep 'old' nameservers
            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p $resolv_conf >>$new_resolv_conf
        fi

if [ -f $resolv_conf ]; then
            chown --reference=$resolv_conf $new_resolv_conf
            chmod --reference=$resolv_conf $new_resolv_conf
	fi
        mv -f $new_resolv_conf $resolv_conf
    fi
}

# set host name
set_hostname() {
    if [ -n "$new_host_name" ]; then
        local current_hostname=$(hostname)

# current host name is empty, '(none)' or 'localhost' or differs from new one from DHCP
        if [ -z "$current_hostname" ] ||
           [ "$current_hostname" = '(none)' ] ||
           [ "$current_hostname" = 'localhost' ] ||
           [ "$current_hostname" = "$old_host_name" ]; then
           if [ "$new_host_name" != "$current_host_name" ]; then
               hostname "$new_host_name"
           fi
        fi
    fi
}

# set the link up and wait for ipv6 link local dad to finish
ipv6_link_up_and_dad() {
    local dev=$1 delay=${2:-0.1} attempts=${3:-60}
    ip link set up dev "$dev" ||
        { error "$dev: failed to set link up"; return 1; }
    local n=0
    while :; do
        n=$((n+1))
        # note: busybox ip does not understand 'tentative' as input
        # so we cannot just use the tentative flag and check for empty
        out=$(ip -6 -o address show dev "$dev" scope link) || {
            error "$dev: checking for link-local addresses failed";
            return 1
        }
        # another note: the output may be empty if the link local tentative addr
        # isn't up just yet, so we need to make sure there is at least one 'inet6'
        # match before returning success.  We need to keep checking for both
        # 'tentative' case and default (no inet6 address) case. (LP: #1718568)
        # Don't reorder tentative/inet6 - we need to check for tentative first.
        case " $out " in
            *\ dadfailed\ *)
                error "$dev: ipv6 dad failed."
                return 1;;
            *\ tentative\ *) :;;
            *\ inet6\ *) return 0;;
            *) :;;
        esac
        [ $n -lt $attempts ] || {
            error "$dev: time out waiting for permanent link-local address"
            return 1;
        }
        sleep $delay
    done
}

# run given script
run_hook() {
    local script="$1"
    local exit_status=0

if [ -f $script ]; then
        . $script
        exit_status=$?
    fi

if [ -n "$exit_status" ] && [ "$exit_status" -ne 0 ]; then
        logger -p daemon.err "$script returned non-zero exit status $exit_status"
    fi

return $exit_status
}

# run scripts in given directory
run_hookdir() {
    local dir="$1"
    local exit_status=0

if [ -d "$dir" ]; then
        for script in $(run-parts --list $dir); do
            run_hook $script
            exit_status=$((exit_status|$?))
        done
    fi

return $exit_status
}

# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
    local exit_status=$1

# Source the documented exit-hook script, if it exists
    if ! run_hook /etc/dhcp/dhclient-exit-hooks; then
        exit_status=$?
    fi

# Now run scripts in the Debian-specific directory.
    if ! run_hookdir /etc/dhcp/dhclient-exit-hooks.d; then
        exit_status=$?
    fi

exit $exit_status
}

# 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 [ -z "$new_interface_mtu" ] || [ "$new_interface_mtu" -le 576 ]; then
    new_interface_mtu=''
fi

# The action starts here

# Invoke the local dhcp client enter hooks, if they exist.
run_hook /etc/dhcp/dhclient-enter-hooks
run_hookdir /etc/dhcp/dhclient-enter-hooks.d

# Execute the operation
case "$reason" in

### DHCPv4 Handlers

MEDIUM|ARPCHECK|ARPSEND)
        # Do nothing
        ;;
    PREINIT)
        # The DHCP client is requesting that an interface be
        # configured as required in order to send packets prior to
        # receiving an actual address. - dhclient-script(8)

# ensure interface is up
        ip link set dev ${interface} up

if [ -n "$alias_ip_address" ]; then
            # flush alias IP from interface
            ip -4 addr flush dev ${interface} label ${interface}:0
        fi

;;

BOUND|RENEW|REBIND|REBOOT)
        set_hostname

if [ -n "$old_ip_address" ] && [ -n "$alias_ip_address" ] &&
           [ "$alias_ip_address" != "$old_ip_address" ]; then
            # alias IP may have changed => flush it
            ip -4 addr flush dev ${interface} label ${interface}:0
        fi

if [ -n "$old_ip_address" ] &&
           [ "$old_ip_address" != "$new_ip_address" ]; then
            # leased IP has changed => flush it
            ip -4 addr flush dev ${interface} label ${interface}
        fi

if [ -z "$old_ip_address" ] ||
           [ "$old_ip_address" != "$new_ip_address" ] ||
           [ "$reason" = "BOUND" ] || [ "$reason" = "REBOOT" ]; then
            # new IP has been leased or leased IP changed => set it
            ip -4 addr add ${new_ip_address}${new_subnet_mask:+/$new_subnet_mask} \
                ${new_broadcast_address:+broadcast $new_broadcast_address} \
                ${new_dhcp_lease_time:+valid_lft $new_dhcp_lease_time} \
                ${new_dhcp_lease_time:+preferred_lft $new_dhcp_lease_time} \
                dev ${interface} label ${interface}

if [ -n "$new_interface_mtu" ]; then
                # set MTU
                ip link set dev ${interface} mtu ${new_interface_mtu}
            fi

# if we have $new_rfc3442_classless_static_routes then we have to
	    # ignore $new_routers entirely
	    if [ ! "$new_rfc3442_classless_static_routes" ]; then
		    # set if_metric if IF_METRIC is set or there's more than one router
		    if_metric="$IF_METRIC"
		    if [ "${new_routers%% *}" != "${new_routers}" ]; then
			if_metric=${if_metric:-1}
		    fi

for router in $new_routers; do
			if [ "$new_subnet_mask" = "255.255.255.255" ]; then
			    # point-to-point connection => set explicit route
			    ip -4 route add ${router} dev $interface >/dev/null 2>&1
			fi

# set default route
			ip -4 route add default via ${router} dev ${interface} \
			    ${if_metric:+metric $if_metric} >/dev/null 2>&1

if [ -n "$if_metric" ]; then
			    if_metric=$((if_metric+1))
			fi
		    done
	    fi
        else # RENEW||REBIND
            ip -4 addr change ${new_ip_address}${new_subnet_mask:+/$new_subnet_mask} \
                ${new_broadcast_address:+broadcast $new_broadcast_address} \
                ${new_dhcp_lease_time:+valid_lft $new_dhcp_lease_time} \
                ${new_dhcp_lease_time:+preferred_lft $new_dhcp_lease_time} \
                dev ${interface} label ${interface}
        fi

if [ -n "$alias_ip_address" ] &&
           [ "$new_ip_address" != "$alias_ip_address" ]; then
            # separate alias IP given, which may have changed
            # => flush it, set it & add host route to it
            ip -4 addr flush dev ${interface} label ${interface}:0
            ip -4 addr add ${alias_ip_address}${alias_subnet_mask:+/$alias_subnet_mask} \
                dev ${interface} label ${interface}:0
            ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
        fi

# update /etc/resolv.conf
        make_resolv_conf

;;

EXPIRE|FAIL|RELEASE|STOP)
        if [ -n "$alias_ip_address" ]; then
            # flush alias IP
            ip -4 addr flush dev ${interface} label ${interface}:0
        fi

if [ -n "$old_ip_address" ]; then
            # flush leased IP
            ip -4 addr flush dev ${interface} label ${interface}
        fi

if [ -n "$alias_ip_address" ]; then
            # alias IP given => set it & add host route to it
            ip -4 addr add ${alias_ip_address}${alias_subnet_mask:+/$alias_subnet_mask} \
                dev ${interface} label ${interface}:0
            ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
        fi

;;

TIMEOUT)
        if [ -n "$alias_ip_address" ]; then
            # flush alias IP
            ip -4 addr flush dev ${interface} label ${interface}:0
        fi

# set IP from recorded lease
        ip -4 addr add ${new_ip_address}${new_subnet_mask:+/$new_subnet_mask} \
            ${new_broadcast_address:+broadcast $new_broadcast_address} \
            ${new_dhcp_lease_time:+valid_lft $new_dhcp_lease_time} \
            ${new_dhcp_lease_time:+preferred_lft $new_dhcp_lease_time} \
            dev ${interface} label ${interface}

if [ -n "$new_interface_mtu" ]; then
            # set MTU
            ip link set dev ${interface} mtu ${new_interface_mtu}
        fi

# if there is no router recorded in the lease or the 1st router answers pings
        if [ -z "$new_routers" ] || ping -q -c 1 "${new_routers%% *}"; then
	    # if we have $new_rfc3442_classless_static_routes then we have to
	    # ignore $new_routers entirely
	    if [ ! "$new_rfc3442_classless_static_routes" ]; then
		    if [ -n "$alias_ip_address" ] &&
		       [ "$new_ip_address" != "$alias_ip_address" ]; then
			# separate alias IP given => set up the alias IP & add host route to it
			ip -4 addr add ${alias_ip_address}${alias_subnet_mask:+/$alias_subnet_mask} \
			    dev ${interface} label ${interface}:0
			ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
		    fi

# set if_metric if IF_METRIC is set or there's more than one router
		    if_metric="$IF_METRIC"
		    if [ "${new_routers%% *}" != "${new_routers}" ]; then
			if_metric=${if_metric:-1}
		    fi

# set default route
		    for router in $new_routers; do
			ip -4 route add default via ${router} dev ${interface} \
			    ${if_metric:+metric $if_metric} >/dev/null 2>&1

if [ -n "$if_metric" ]; then
			    if_metric=$((if_metric+1))
			fi
		    done
	    fi

# update /etc/resolv.conf
            make_resolv_conf
        else
            # flush all IPs from interface
            ip -4 addr flush dev ${interface}
            exit_with_hooks 2
        fi

;;

### DHCPv6 Handlers
    # TODO handle prefix change: ?based on ${old_ip6_prefix} and ${new_ip6_prefix}?

PREINIT6)
        # ensure interface is up
        ipv6_link_up_and_dad "$interface"

# flush any stale global permanent IPs from interface
        ip -6 addr flush dev ${interface} scope global permanent

;;

BOUND6|RENEW6|REBIND6)
        if [ "${new_ip6_address}" ]; then
            # set leased IP
            ip -6 addr add ${new_ip6_address} \
                dev ${interface} scope global
        fi

# update /etc/resolv.conf
        if [ "${reason}" = BOUND6 ] ||
           [ "${new_dhcp6_name_servers}" != "${old_dhcp6_name_servers}" ] ||
           [ "${new_dhcp6_domain_search}" != "${old_dhcp6_domain_search}" ]; then
            make_resolv_conf
        fi

;;

DEPREF6)
        # set preferred lifetime of leased IP to 0
        ip -6 addr change ${cur_ip6_address} \
            dev ${interface} scope global preferred_lft 0

;;

EXPIRE6|RELEASE6|STOP6)
        if [ -z "${old_ip6_address}" ]; then
            exit_with_hooks 2
        fi

# delete leased IP
        ip -6 addr del ${old_ip6_address} \
            dev ${interface}

;;
esac

exit_with_hooks 0

${this.title}

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