--- /dev/null
+# ==> /etc/systemd/system/public-inbox-nntps.socket <==
+[Unit]
+Description = public-inbox-nntps socket
+
+[Socket]
+ListenStream = 0.0.0.0:563
+BindIPv6Only = ipv6-only
+ListenStream = [::]:563
+Service = public-inbox-nntpd@1.service
+
+[Install]
+WantedBy = sockets.target