diff --git a/cf-ddns.service b/cf-ddns.service
new file mode 100644
index 0000000..47d0d25
--- /dev/null
+++ b/cf-ddns.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=Cloudflare DDNS updater (local IPv4 via default route)
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+EnvironmentFile=/etc/cf-ddns/cf-ddns.env
+ExecStart=/usr/local/bin/cf-ddns
+Nice=10
+IOSchedulingClass=best-effort
+
+[Install]
+WantedBy=multi-user.target
+EOF
\ No newline at end of file