- b->address = strjoin("unixexec:path=ssh,argv1=-xT,argv2=", e, ",argv3=systemd-stdio-bridge", NULL);
+ /* Let's make sure this is not a port of some kind,
+ * and is a valid machine name. */
+ if (!in_charset(m, "0123456789") && machine_name_is_valid(m)) {
+ char *t;
+
+ /* Cut out the host part */
+ t = strndupa(host, m - host - 1);
+ e = bus_address_escape(t);
+ if (!e)
+ return -ENOMEM;
+
+ c = strappenda(",argv4=--machine=", m);
+ }
+ }
+
+ if (!e) {
+ e = bus_address_escape(host);
+ if (!e)
+ return -ENOMEM;
+ }
+
+ b->address = strjoin("unixexec:path=ssh,argv1=-xT,argv2=", e, ",argv3=systemd-stdio-bridge", c, NULL);