--- /etc/dhcp/dhclient-enter-hooks.d/resolved.orig	2018-12-20 22:16:45.914466953 +0000
+++ /etc/dhcp/dhclient-enter-hooks.d/resolved	2018-12-20 23:15:03.861114407 +0000
@@ -26,10 +26,13 @@
               if [ ! "$interface" ] ; then
                   return
               fi
               statedir="/run/systemd/resolved.conf.d"
               mkdir -p $statedir
+
+              oldstate="$(mktemp)"
+              md5sum $statedir/isc-dhcp-v4-$interface.conf $statedir/isc-dhcp-v6-$interface.conf > $oldstate 2>&1
               if [ -n "$new_domain_name_servers" ] ; then
                   cat <<EOF >$statedir/isc-dhcp-v4-$interface.conf
 [Resolve]
 DNS=$new_domain_name_servers
 EOF
@@ -48,11 +51,19 @@
                       cat <<EOF >>$statedir/isc-dhcp-v6-$interface.conf
 Domains=$new_dhcp6_domain_search
 EOF
                   fi
               fi
-              systemctl try-reload-or-restart systemd-resolved.service
+
+              newstate="$(mktemp)"
+              md5sum $statedir/isc-dhcp-v4-$interface.conf $statedir/isc-dhcp-v6-$interface.conf > $newstate 2>&1
+              if ! cmp --quiet $oldstate $newstate; then
+                  systemctl try-reload-or-restart systemd-resolved.service
+              fi
+
+              rm $oldstate
+	      rm $newstate
           }
                 ;;
 
           EXPIRE|FAIL|RELEASE|STOP)
               if [ ! "$interface" ] ; then