diff -Nru initramfs-tools-0.122ubuntu8.1/debian/changelog initramfs-tools-0.122ubuntu8.2/debian/changelog
--- initramfs-tools-0.122ubuntu8.1/debian/changelog	2016-06-06 18:32:03.000000000 +0000
+++ initramfs-tools-0.122ubuntu8.2/debian/changelog	2016-09-23 22:01:48.000000000 +0000
@@ -1,3 +1,15 @@
+initramfs-tools (0.122ubuntu8.2) xenial; urgency=medium
+
+  [ Mathieu Trudel-Lapierre ]
+  * scripts/functions: update configure_networking to use dhclient.
+    (LP: #1621507)
+
+  [ LaMont Jones ]
+  * Depend/Breaks isc-dhcp-client as needed to make sure that it has
+    initramfs support
+
+ -- LaMont Jones <lamont@ubuntu.com>  Fri, 23 Sep 2016 16:01:48 -0600
+
 initramfs-tools (0.122ubuntu8.1) xenial; urgency=medium
 
   * hook-functions: include ehci-msm in auto_add_modules_list
diff -Nru initramfs-tools-0.122ubuntu8.1/debian/control initramfs-tools-0.122ubuntu8.2/debian/control
--- initramfs-tools-0.122ubuntu8.1/debian/control	2016-02-21 21:22:01.000000000 +0000
+++ initramfs-tools-0.122ubuntu8.2/debian/control	2016-09-23 22:00:43.000000000 +0000
@@ -14,11 +14,11 @@
 Package: initramfs-tools
 Architecture: all
 Multi-Arch: foreign
-Depends: initramfs-tools-core (= ${binary:Version}), linux-base, ${misc:Depends}
+Depends: initramfs-tools-core (= ${binary:Version}), linux-base, ${misc:Depends}, isc-dhcp-client (>= 4.3.3-5ubuntu12.3)
 Suggests: bash-completion
 Provides: linux-initramfs-tool
 Conflicts: linux-initramfs-tool, usplash (<< 0.5.50)
-Breaks: cryptsetup (<< 2:1.6.6-4~), elilo (<< 3.12-3.1~), lilo (<< 22.8-8.2~), s390-tools (<< 1.8.3-2~), console-setup (<< 1.72), systemd-sysv (<< 186), lvm2 (<< 2.02.111-2.1~), initscripts (<< 2.88dsf-59.3~), mountall (<< 2.0~)
+Breaks: cryptsetup (<< 2:1.6.6-4~), elilo (<< 3.12-3.1~), lilo (<< 22.8-8.2~), s390-tools (<< 1.8.3-2~), console-setup (<< 1.72), systemd-sysv (<< 186), lvm2 (<< 2.02.111-2.1~), initscripts (<< 2.88dsf-59.3~), mountall (<< 2.0~), isc-dhcp-client (= 4.3.3-5ubuntu13)
 Description: generic modular initramfs generator (automation)
  This package builds a bootable initramfs for Linux kernel packages.  The
  initramfs is loaded along with the kernel and is responsible for
diff -Nru initramfs-tools-0.122ubuntu8.1/scripts/functions initramfs-tools-0.122ubuntu8.2/scripts/functions
--- initramfs-tools-0.122ubuntu8.1/scripts/functions	2016-03-05 09:47:31.000000000 +0000
+++ initramfs-tools-0.122ubuntu8.2/scripts/functions	2016-09-23 22:01:48.000000000 +0000
@@ -254,12 +254,16 @@
 		none|off)
 			# Do nothing
 			;;
-		""|on|any)
+		""|::::*|on|any|dhcp|bootp|rarp|both)
+			# if IP contains something other than BOOTIF; use that
+			# interface to bring up the network.
+			if ! echo "${IP}" | grep -qc 'BOOTIF'; then
+				DEVICE="${IP#*:*:*:*:*:*}";
+			fi
+
 			# Bring up device
-			ipconfig -t ${ROUNDTTT} "${DEVICE}"
-			;;
-		dhcp|bootp|rarp|both)
-			ipconfig -t ${ROUNDTTT} -c ${IP} -d "${DEVICE}"
+			dhclient -4 -1 -v "${DEVICE}"
+			dhclient -6 -1 -v "${DEVICE}"
 			;;
 		*)
 			ipconfig -t ${ROUNDTTT} -d $IP