diff -Nru knockd-0.7/debian/changelog knockd-0.7/debian/changelog
--- knockd-0.7/debian/changelog	2016-11-17 04:58:14.000000000 -0500
+++ knockd-0.7/debian/changelog	2019-03-10 11:13:50.000000000 -0400
@@ -1,3 +1,11 @@
+knockd (0.7-1ubuntu2) disco; urgency=medium
+
+  * Fix systemd knockd.service file:
+    - use After=network-online.target (LP: #1819345)
+    - add [Install] so knockd service can be enabled (LP: #1799697)
+
+ -- Dan Streetman <ddstreet@canonical.com>  Sun, 10 Mar 2019 11:13:50 -0400
+
 knockd (0.7-1ubuntu1) zesty; urgency=low
 
   * Merge from Debian unstable.  Remaining changes:
diff -Nru knockd-0.7/debian/knockd.service knockd-0.7/debian/knockd.service
--- knockd-0.7/debian/knockd.service	2016-10-08 10:05:00.000000000 -0400
+++ knockd-0.7/debian/knockd.service	2019-03-10 11:13:35.000000000 -0400
@@ -1,6 +1,6 @@
 [Unit]
 Description=Port-Knock Daemon
-After=network.target
+After=network-online.target
 Documentation=man:knockd(1)
 
 [Service]
@@ -11,3 +11,6 @@
 SuccessExitStatus=0 2 15
 ProtectSystem=full
 CapabilityBoundingSet=CAP_NET_RAW CAP_NET_ADMIN
+
+[Install]
+WantedBy=multi-user.target