diff --git a/dockerfile.go b/dockerfile.go
index cf8f3f3..2ffd251 100644
--- a/dockerfile.go
+++ b/dockerfile.go
@@ -91,7 +91,11 @@ func NewDockerfile(release OSRelease, img, password string, networkManager Netwo
 		net = NetworkManagerIfupdown2
 	case ReleaseUbuntu:
 		d.tmpl = ubuntuDockerfileTemplate
-		net = NetworkManagerNetplan
+		if release.VersionID < "18.04" {
+			net = NetworkManagerIfupdown2
+		} else {
+			net = NetworkManagerNetplan
+		}
 	case ReleaseAlpine:
 		d.tmpl = alpineDockerfileTemplate
 		net = NetworkManagerIfupdown2
diff --git a/templates/ubuntu.Dockerfile b/templates/ubuntu.Dockerfile
index 24c9f7a..1589379 100644
--- a/templates/ubuntu.Dockerfile
+++ b/templates/ubuntu.Dockerfile
@@ -25,7 +25,9 @@ RUN ARCH="$([ "$(uname -m)" = "x86_64" ] && echo amd64 || echo arm64)"; \
   iputils-ping && \
   find /boot -type l -exec rm {} \;
 
+{{ if gt .Release.VersionID "16.04" }}
 RUN systemctl preset-all
+{{ end }}
 
 {{ if .Password }}RUN echo "root:{{ .Password }}" | chpasswd {{ end }}