authentication information is only read on load

src/config.c

@@ -406,6 +406,9 @@ unsigned force_cert_auth;
 		prev = val;
 	} while((val = optionNextValue(pov, prev)) != NULL);
 
+	/* authentication information is only read on first load, as
+	 * it cannot be safely switched */
+	if (reload == 0) {
 		config->sup_config_type = SUP_CONFIG_FILE;
 
 		READ_MULTI_LINE("auth", auth, auth_size);
@@ -475,6 +478,7 @@ unsigned force_cert_auth;
 			talloc_free(auth[j]);
 		}
 		talloc_free(auth);
+	}
 
 	/* When adding allocated data, remember to modify
 	 * reload_cfg_file();