diff -Nru isc-dhcp-4.4.1/debian/changelog isc-dhcp-4.4.1/debian/changelog
--- isc-dhcp-4.4.1/debian/changelog	2019-03-13 01:26:56.000000000 +0000
+++ isc-dhcp-4.4.1/debian/changelog	2019-09-02 22:10:56.000000000 +0000
@@ -1,3 +1,11 @@
+isc-dhcp (4.4.1-2ubuntu5) eoan; urgency=medium
+
+  * Apply patch from Alkis Georgopoulos to generate correct
+    net{,6}-${iface}.conf files when DHCP supplies multiple DNS servers.
+    (LP: #1840965).
+
+ -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Tue, 03 Sep 2019 10:10:56 +1200
+
 isc-dhcp (4.4.1-2ubuntu4) disco; urgency=medium
 
   * Write pidfile before informing parent of success. (LP: #1819747)
diff -Nru isc-dhcp-4.4.1/debian/initramfs-tools/lib/etc/dhcp/dhclient-enter-hooks.d/config isc-dhcp-4.4.1/debian/initramfs-tools/lib/etc/dhcp/dhclient-enter-hooks.d/config
--- isc-dhcp-4.4.1/debian/initramfs-tools/lib/etc/dhcp/dhclient-enter-hooks.d/config	2018-08-30 21:43:53.000000000 +0000
+++ isc-dhcp-4.4.1/debian/initramfs-tools/lib/etc/dhcp/dhclient-enter-hooks.d/config	2019-09-02 22:07:27.000000000 +0000
@@ -2,48 +2,57 @@
 
 case "$reason" in
 BOUND)
-	echo "DEVICE=$interface" >> /run/net-$interface.conf
-	echo "PROTO=dhcp" >> /run/net-$interface.conf
-	echo "IPV4PROTO=dhcp" >> /run/net-$interface.conf
-	echo "IPV4ADDR=$new_ip_address" >> /run/net-$interface.conf
-	echo "IPV4NETMASK=$new_subnet_mask" >> /run/net-$interface.conf
-	echo "IPV4BROADCAST=$new_broadcast_address" >> /run/net-$interface.conf
-	echo "IPV4GATEWAY=$new_routers" >> /run/net-$interface.conf
-	echo "IPV4DNS0=$new_domain_name_servers" >> /run/net-$interface.conf
-	echo "ROOTSERVER=$new_routers" >> /run/net-$interface.conf
-	if [ -n "$host_name"]; then
-		echo "HOSTNAME=$new_host_name" >> /run/net-$interface.conf
-	fi
-	if [ -n "$domain_name"]; then
-		echo "DNSDOMAIN=$new_domain_name" >> /run/net-$interface.conf
-	fi
-	if [ -n "$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" = "${new_domain_name}." ]; then
-					domain_in_search_list="Yes"
+	{
+		echo "DEVICE='$interface'"
+		echo "PROTO='dhcp'"
+		echo "IPV4PROTO='dhcp'"
+		echo "IPV4ADDR='$new_ip_address'"
+		echo "IPV4NETMASK='$new_subnet_mask'"
+		echo "IPV4BROADCAST='$new_broadcast_address'"
+		# Only keep the first router
+		echo "IPV4GATEWAY='${new_routers%% *}'"
+		i=0
+		for name in $new_domain_name_servers; do
+		    echo "IPV4DNS$i='$name'"
+		    i=$((i+1))
+		done
+		echo "ROOTSERVER='${new_routers%% *}'"
+		echo "HOSTNAME='$new_host_name'"
+		echo "DNSDOMAIN='$new_domain_name'"
+		if [ -n "$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 $new_domain_search"
 				fi
-			done
-			if [ -z "$domain_in_search_list" ]; then
-				new_domain_search="$new_domain_name $new_domain_search"
 			fi
+			echo "DOMAINSEARCH='${new_domain_search}'"
+		elif [ -n "$new_domain_name" ]; then
+			echo "DOMAINSEARCH='${new_domain_name}'"
 		fi
-		echo "DOMAINSEARCH=${new_domain_search}" >> /run/net-$interface.conf
-	elif [ -n "$new_domain_name" ]; then
-		echo "DOMAINSEARCH=${new_domain_name}" >> /run/net-$interface.conf
-	fi
+	} >"/run/net-$interface.conf"
 	;;
 BOUND6)
-	echo "DEVICE6=$interface" > /run/net6-$interface.conf
-	echo "IPV6PROTO=dhcp6" >> /run/net6-$interface.conf
-	echo "IPV6ADDR=$new_ip6_address" >> /run/net6-$interface.conf
-	echo "IPV6NETMASK=$new_ip6_prefixlen" >> /run/net6-$interface.conf
-	echo "IPV6DNS0=$new_dhcp6_name_servers" >> /run/net6-$interface.conf
-	if [ -n "$new_dhcp6_domain_search" ]; then
-		echo "IPV6DOMAINSEARCH=$new_dhcp6_domain_search" >> /run/net6-$interface.conf
-	fi
+	{
+		echo "DEVICE6='$interface'"
+		echo "IPV6PROTO='dhcp6'"
+		echo "IPV6ADDR='$new_ip6_address'"
+		echo "IPV6NETMASK='$new_ip6_prefixlen'"
+		i=0
+		for name in $new_dhcp6_name_servers; do
+		    echo "IPV6DNS$i='$name'"
+		    i=$((i+1))
+		done
+		if [ -n "$new_dhcp6_domain_search" ]; then
+			echo "IPV6DOMAINSEARCH='$new_dhcp6_domain_search'"
+		fi
+	} >"/run/net6-$interface.conf"
 	;;
 esac