src/core/main.c

@@ -1930,7 +1930,7 @@ static int initialize_runtime(
                         status_welcome();
                         hostname_setup();
                         machine_id_setup(NULL, arg_machine_id, NULL);
-                        (void) loopback_setup();
+                        loopback_setup();
                         bump_unix_max_dgram_qlen();
                         bump_file_max_and_nr_open();
                         test_usr();

src/nspawn/nspawn.c

@@ -3000,7 +3000,7 @@ static int inner_child(
                 return log_error_errno(errno, "setsid() failed: %m");
 
         if (arg_private_network)
-                (void) loopback_setup();
+                loopback_setup();
 
         if (arg_expose_ports) {
                 r = expose_port_send_rtnl(rtnl_socket);

units/user@.service.in

@@ -18,7 +18,7 @@ IgnoreOnIsolate=yes
 User=%i
 PAMName=systemd-user
 Type=notify
-ExecStart=@rootlibexecdir@/systemd --user
+ExecStart=-@rootlibexecdir@/systemd --user
 Slice=user-%i.slice
 KillMode=mixed
 Delegate=pids memory