diff -Nru nfs-utils-1.3.4/debian/changelog nfs-utils-1.3.4/debian/changelog
--- nfs-utils-1.3.4/debian/changelog	2020-06-17 12:42:59.000000000 +0000
+++ nfs-utils-1.3.4/debian/changelog	2021-05-24 20:51:48.000000000 +0000
@@ -1,3 +1,11 @@
+nfs-utils (1:1.3.4-2.5ubuntu3.4) focal; urgency=medium
+
+  * d/nfs-common.postinst: always start nfs-utils.service, so the
+    restart in the #DEBHELPER# section can do its job if needed
+    (LP: #1928259)
+
+ -- Andreas Hasenack <andreas@canonical.com>  Mon, 24 May 2021 17:51:48 -0300
+
 nfs-utils (1:1.3.4-2.5ubuntu3.3) focal-security; urgency=medium
 
   * SECURITY UPDATE: privilege escalation via directory permissions
diff -Nru nfs-utils-1.3.4/debian/nfs-common.postinst nfs-utils-1.3.4/debian/nfs-common.postinst
--- nfs-utils-1.3.4/debian/nfs-common.postinst	2020-06-17 12:42:59.000000000 +0000
+++ nfs-utils-1.3.4/debian/nfs-common.postinst	2021-05-24 20:51:48.000000000 +0000
@@ -43,6 +43,10 @@
 	if [ -f /lib/init/rw/sendsigs.omit.d/statd ]; then 
 	    mv /lib/init/rw/sendsigs.omit.d/statd /run/sendsigs.omit.d/statd
 	fi
+
+        # always "start" nfs-utils.service, so package upgrades will restart it,
+        # see LP: #1928259
+        systemctl start nfs-utils.service > /dev/null || true
     ;;
 esac