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Linux Stag-Enterprise-Staging-20-04 5.11.0-1019-aws #20~20.04.1-Ubuntu SMP Tue Sep 21 10:40:39 UTC 2021 x86_64
Apache
Server: 172.31.9.152
Your IP: 216.73.216.236

HOME

Name	Type	Size	Permissions	Modified	Actions
..	Parent	-	drwxr-xr-x	2026-02-25 04:03:09	-
aa-remove-unknown	File	3 KB	0755	2025-08-15 12:17:13
aa-status	File	62.62 KB	0755	2025-08-15 12:17:13
aa-teardown	File	137 B	0755	2022-02-10 00:45:25
add-shell	File	1.03 KB	0755	2022-03-23 13:49:54
addgroup	File	37.35 KB	0755	2021-01-06 06:16:50
adduser	File	37.35 KB	0755	2021-01-06 06:16:50
agetty	File	55.56 KB	0755	2024-04-09 15:32:56
apparmor_parser	File	1.48 MB	0755	2025-08-15 12:17:13
apparmor_status	File	62.62 KB	0755	2025-08-15 12:17:13
arpd	File	26.33 KB	0755	2022-03-24 11:56:47
arptables	File	219.04 KB	0755	2024-01-16 21:14:30
arptables-nft	File	219.04 KB	0755	2024-01-16 21:14:30
arptables-nft-restore	File	219.04 KB	0755	2024-01-16 21:14:30
arptables-nft-save	File	219.04 KB	0755	2024-01-16 21:14:30
arptables-restore	File	219.04 KB	0755	2024-01-16 21:14:30
arptables-save	File	219.04 KB	0755	2024-01-16 21:14:30
badblocks	File	34.32 KB	0755	2023-10-09 01:50:10
blkdeactivate	File	15.97 KB	0755	2024-11-27 19:04:29
blkdiscard	File	22.38 KB	0755	2024-04-09 15:32:56
blkid	File	50.41 KB	0755	2024-04-09 15:32:56
blkzone	File	34.38 KB	0755	2024-04-09 15:32:56
blockdev	File	30.38 KB	0755	2024-04-09 15:32:56
bridge	File	92.49 KB	0755	2022-03-24 11:56:47
capsh	File	30.3 KB	0755	2025-02-20 15:51:02
cfdisk	File	94.73 KB	0755	2024-04-09 15:32:56
chcpu	File	30.38 KB	0755	2024-04-09 15:32:56
chgpasswd	File	58.13 KB	0755	2024-02-06 12:54:23
chmem	File	34.38 KB	0755	2024-04-09 15:32:56
chpasswd	File	54.16 KB	0755	2024-02-06 12:54:23
chroot	File	38.51 KB	0755	2024-02-08 03:46:39
cpgr	File	48.29 KB	0755	2024-02-06 12:54:23
cppw	File	48.29 KB	0755	2024-02-06 12:54:23
cryptdisks_start	File	1.51 KB	0755	2022-01-13 21:44:36
cryptdisks_stop	File	844 B	0755	2022-01-13 21:44:36
cryptsetup	File	169.92 KB	0755	2025-03-07 17:50:37
cryptsetup-reencrypt	File	90.38 KB	0755	2025-03-07 17:50:37
cryptsetup-ssh	File	23.53 KB	0755	2025-03-07 17:50:37
ctrlaltdel	File	14.38 KB	0755	2024-04-09 15:32:56
dcb	File	80.52 KB	0755	2022-03-24 11:56:47
debugfs	File	229.8 KB	0755	2023-10-09 01:50:10
delgroup	File	16.11 KB	0755	2021-01-06 06:16:50
deluser	File	16.11 KB	0755	2021-01-06 06:16:50
depmod	File	170.34 KB	0755	2020-03-12 13:15:28
devlink	File	142.86 KB	0755	2022-03-24 11:56:47
dhclient	File	442.66 KB	0755	2023-01-31 21:54:40
dhclient-script	File	15.92 KB	0755	2023-01-31 21:54:40
dmsetup	File	171.02 KB	0755	2024-11-27 19:04:29
dmstats	File	171.02 KB	0755	2024-11-27 19:04:29
dosfsck	File	82.38 KB	0755	2022-03-23 13:51:01
dosfslabel	File	38.38 KB	0755	2022-03-23 13:51:01
dumpe2fs	File	30.31 KB	0755	2023-10-09 01:50:10
e2freefrag	File	14.3 KB	0755	2023-10-09 01:50:10
e2fsck	File	351.84 KB	0755	2023-10-09 01:50:10
e2image	File	42.31 KB	0755	2023-10-09 01:50:10
e2label	File	102.55 KB	0755	2023-10-09 01:50:10
e2mmpstatus	File	30.31 KB	0755	2023-10-09 01:50:10
e2scrub	File	7.13 KB	0755	2023-10-09 01:50:10
e2scrub_all	File	5.27 KB	0755	2023-10-09 01:50:10
e2undo	File	22.3 KB	0755	2023-10-09 01:50:10
e4crypt	File	30.38 KB	0755	2023-10-09 01:50:10
e4defrag	File	30.3 KB	0755	2023-10-09 01:50:10
ebtables	File	219.04 KB	0755	2024-01-16 21:14:30
ebtables-nft	File	219.04 KB	0755	2024-01-16 21:14:30
ebtables-nft-restore	File	219.04 KB	0755	2024-01-16 21:14:30
ebtables-nft-save	File	219.04 KB	0755	2024-01-16 21:14:30
ebtables-restore	File	219.04 KB	0755	2024-01-16 21:14:30
ebtables-save	File	219.04 KB	0755	2024-01-16 21:14:30
faillock	File	14.15 KB	0755	2025-06-12 14:45:28
fatlabel	File	38.38 KB	0755	2022-03-23 13:51:01
fdisk	File	110.42 KB	0755	2024-04-09 15:32:56
filefrag	File	18.32 KB	0755	2023-10-09 01:50:10
findfs	File	14.38 KB	0755	2024-04-09 15:32:56
fsck	File	42.42 KB	0755	2024-04-09 15:32:56
fsck.cramfs	File	30.44 KB	0755	2024-04-09 15:32:56
fsck.ext2	File	351.84 KB	0755	2023-10-09 01:50:10
fsck.ext3	File	351.84 KB	0755	2023-10-09 01:50:10
fsck.ext4	File	351.84 KB	0755	2023-10-09 01:50:10
fsck.fat	File	82.38 KB	0755	2022-03-23 13:51:01
fsck.minix	File	54.41 KB	0755	2024-04-09 15:32:56
fsck.msdos	File	82.38 KB	0755	2022-03-23 13:51:01
fsck.vfat	File	82.38 KB	0755	2022-03-23 13:51:01
fsfreeze	File	14.38 KB	0755	2024-04-09 15:32:56
fstab-decode	File	18.3 KB	0755	2021-12-14 21:17:22
fstrim	File	42.38 KB	0755	2024-04-09 15:32:56
genl	File	90.44 KB	0755	2022-03-24 11:56:47
getcap	File	14.3 KB	0755	2025-02-20 15:51:02
getpcaps	File	14.3 KB	0755	2025-02-20 15:51:02
getty	File	55.56 KB	0755	2024-04-09 15:32:56
groupadd	File	66.91 KB	0755	2024-02-06 12:54:23
groupdel	File	62.73 KB	0755	2024-02-06 12:54:23
groupmems	File	54.19 KB	0755	2024-02-06 12:54:23
groupmod	File	66.82 KB	0755	2024-02-06 12:54:23
grpck	File	58.13 KB	0755	2024-02-06 12:54:23
grpconv	File	50.01 KB	0755	2024-02-06 12:54:23
grpunconv	File	50.01 KB	0755	2024-02-06 12:54:23
halt	File	973.23 KB	0755	2023-03-02 12:58:02
hwclock	File	50.5 KB	0755	2024-04-09 15:32:56
iconvconfig	File	30.4 KB	0755	2026-01-30 08:20:56
init	File	1.55 MB	0755	2023-03-02 12:58:02
insmod	File	170.34 KB	0755	2020-03-12 13:15:28
installkernel	File	2.6 KB	0755	2022-03-23 13:49:54
integritysetup	File	54.07 KB	0755	2025-03-07 17:50:37
invoke-rc.d	File	16.12 KB	0755	2021-12-07 21:55:54
ip	File	597.62 KB	0755	2020-02-13 17:21:59
ip6tables	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-apply	File	6.89 KB	0755	2021-01-15 22:03:39
ip6tables-legacy	File	96.95 KB	0755	2024-01-16 21:14:30
ip6tables-legacy-restore	File	96.95 KB	0755	2024-01-16 21:14:30
ip6tables-legacy-save	File	96.95 KB	0755	2024-01-16 21:14:30
ip6tables-nft	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-nft-restore	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-nft-save	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-restore	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-restore-translate	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-save	File	219.04 KB	0755	2024-01-16 21:14:30
ip6tables-translate	File	219.04 KB	0755	2024-01-16 21:14:30
iptables	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-apply	File	6.89 KB	0755	2021-01-15 22:03:39
iptables-legacy	File	96.95 KB	0755	2024-01-16 21:14:30
iptables-legacy-restore	File	96.95 KB	0755	2024-01-16 21:14:30
iptables-legacy-save	File	96.95 KB	0755	2024-01-16 21:14:30
iptables-nft	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-nft-restore	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-nft-save	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-restore	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-restore-translate	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-save	File	219.04 KB	0755	2024-01-16 21:14:30
iptables-translate	File	219.04 KB	0755	2024-01-16 21:14:30
isosize	File	14.38 KB	0755	2024-04-09 15:32:56
killall5	File	30.38 KB	0755	2021-12-14 21:17:22
ldattach	File	26.38 KB	0755	2024-04-09 15:32:56
ldconfig	File	387 B	0755	2026-01-30 08:20:56
ldconfig.real	File	1.16 MB	0755	2026-01-30 08:20:56
logsave	File	14.16 KB	0755	2023-10-09 01:50:10
losetup	File	70.52 KB	0755	2024-04-09 15:32:56
lsmod	File	170.34 KB	0755	2020-03-12 13:15:28
luksformat	File	3.32 KB	0755	2022-01-13 21:44:36
mkdosfs	File	50.83 KB	0755	2022-03-23 13:51:01
mke2fs	File	130.62 KB	0755	2023-10-09 01:50:10
mkfs	File	14.38 KB	0755	2024-04-09 15:32:56
mkfs.bfs	File	22.38 KB	0755	2024-04-09 15:32:56
mkfs.cramfs	File	34.32 KB	0755	2024-04-09 15:32:56
mkfs.ext2	File	130.62 KB	0755	2023-10-09 01:50:10
mkfs.ext3	File	130.62 KB	0755	2023-10-09 01:50:10
mkfs.ext4	File	130.62 KB	0755	2023-10-09 01:50:10
mkfs.fat	File	50.83 KB	0755	2022-03-23 13:51:01
mkfs.minix	File	42.39 KB	0755	2024-04-09 15:32:56
mkfs.msdos	File	50.83 KB	0755	2022-03-23 13:51:01
mkfs.vfat	File	50.83 KB	0755	2022-03-23 13:51:01
mkhomedir_helper	File	22.17 KB	0755	2025-06-12 14:45:28
mklost+found	File	14.3 KB	0755	2023-10-09 01:50:10
mkswap	File	46.38 KB	0755	2024-04-09 15:32:56
modinfo	File	170.34 KB	0755	2020-03-12 13:15:28
modprobe	File	170.34 KB	0755	2020-03-12 13:15:28
netplan	File	798 B	0755	2023-05-17 17:11:16
newusers	File	74.73 KB	0755	2024-02-06 12:54:23
nfnl_osf	File	18.3 KB	0755	2024-01-16 21:14:30
nologin	File	14.3 KB	0755	2024-02-06 12:54:23
pam-auth-update	File	20.5 KB	0755	2024-11-17 10:17:22
pam_extrausers_chkpwd	File	22.15 KB	2755	2025-06-12 14:45:28
pam_extrausers_update	File	30.15 KB	0755	2025-06-12 14:45:28
pam_getenv	File	2.82 KB	0755	2024-11-17 10:17:22
pam_timestamp_check	File	14.15 KB	0755	2025-06-12 14:45:28
pivot_root	File	14.38 KB	0755	2024-04-09 15:32:56
plymouthd	File	150.55 KB	0755	2023-01-03 09:56:53
poweroff	File	973.23 KB	0755	2023-03-02 12:58:02
pwck	File	50.13 KB	0755	2024-02-06 12:54:23
pwconv	File	46.01 KB	0755	2024-02-06 12:54:23
pwunconv	File	42.01 KB	0755	2024-02-06 12:54:23
readprofile	File	22.41 KB	0755	2024-04-09 15:32:56
reboot	File	973.23 KB	0755	2023-03-02 12:58:02
remove-shell	File	1.07 KB	0755	2022-03-23 13:49:54
resize2fs	File	66.3 KB	0755	2023-10-09 01:50:10
rfkill	File	30.23 KB	0755	2024-04-09 15:32:56
rmmod	File	170.34 KB	0755	2020-03-12 13:15:28
rmt	File	58.57 KB	0755	2023-12-05 05:15:51
rmt-tar	File	58.57 KB	0755	2023-12-05 05:15:51
rtacct	File	28.31 KB	0755	2022-03-24 11:56:47
rtcwake	File	34.38 KB	0755	2024-04-09 15:32:56
rtmon	File	90.39 KB	0755	2022-03-24 11:56:47
runlevel	File	973.23 KB	0755	2023-03-02 12:58:02
runuser	File	54.38 KB	0755	2024-04-09 15:32:56
service	File	8.88 KB	0755	2022-02-15 22:32:46
setcap	File	14.3 KB	0755	2025-02-20 15:51:02
sfdisk	File	102.38 KB	0755	2024-04-09 15:32:56
shadowconfig	File	885 B	0755	2021-11-11 15:42:38
shutdown	File	973.23 KB	0755	2023-03-02 12:58:02
sshd	File	899.7 KB	0755	2025-04-11 12:05:47
start-stop-daemon	File	47.35 KB	0755	2025-09-09 20:09:16
sudo_logsrvd	File	200.1 KB	0755	2025-06-25 12:48:23
sudo_sendlog	File	107.34 KB	0755	2025-06-25 12:48:23
sulogin	File	42.38 KB	0755	2024-04-09 15:32:56
swaplabel	File	18.38 KB	0755	2024-04-09 15:32:56
swapoff	File	22.38 KB	0755	2024-04-09 15:32:56
swapon	File	42.38 KB	0755	2024-04-09 15:32:56
switch_root	File	22.38 KB	0755	2024-04-09 15:32:56
sysctl	File	30.23 KB	0755	2023-10-31 11:36:04
tarcat	File	936 B	0755	2023-12-05 05:15:51
tc	File	614.08 KB	0755	2022-03-24 11:56:47
telinit	File	973.23 KB	0755	2023-03-02 12:58:02
tipc	File	90.44 KB	0755	2022-03-24 11:56:47
tune2fs	File	102.55 KB	0755	2023-10-09 01:50:10
tzconfig	File	106 B	0755	2025-04-22 10:15:47
unix_chkpwd	File	26.15 KB	2755	2025-06-12 14:45:28
unix_update	File	30.15 KB	0755	2025-06-12 14:45:28
update-ca-certificates	File	5.29 KB	0755	2024-09-24 17:46:09
update-passwd	File	34.56 KB	0755	2022-03-23 09:42:40
update-rc.d	File	16.92 KB	0755	2021-12-07 21:55:54
update-shells	File	3.72 KB	0755	2022-03-23 13:49:54
useradd	File	127.66 KB	0755	2024-02-06 12:54:23
userdel	File	86.85 KB	0755	2024-02-06 12:54:23
usermod	File	123.46 KB	0755	2024-02-06 12:54:23
vdpa	File	30.56 KB	0755	2022-03-24 11:56:47
veritysetup	File	43.76 KB	0755	2025-03-07 17:50:37
vigr	File	56.53 KB	0755	2024-02-06 12:54:23
vipw	File	56.53 KB	0755	2024-02-06 12:54:23
visudo	File	219.79 KB	0755	2025-06-25 12:48:23
wipefs	File	38.38 KB	0755	2024-04-09 15:32:56
wpa_action	File	1.69 KB	0755	2025-07-21 23:13:31
wpa_cli	File	140.31 KB	0755	2025-07-21 23:13:31
wpa_supplicant	File	3.24 MB	0755	2025-07-21 23:13:31
xtables-legacy-multi	File	96.95 KB	0755	2024-01-16 21:14:30
xtables-monitor	File	219.04 KB	0755	2024-01-16 21:14:30
xtables-nft-multi	File	219.04 KB	0755	2024-01-16 21:14:30
zic	File	62.32 KB	0755	2026-01-30 08:20:56
zramctl	File	54.52 KB	0755	2024-04-09 15:32:56

#!/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

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