diff --git a/slsDetectorSoftware/tests/Caller/test-Caller-rx.cpp b/slsDetectorSoftware/tests/Caller/test-Caller-rx.cpp
index 38fe14e86..66cc474d6 100644
--- a/slsDetectorSoftware/tests/Caller/test-Caller-rx.cpp
+++ b/slsDetectorSoftware/tests/Caller/test-Caller-rx.cpp
@@ -445,23 +445,25 @@ TEST_CASE("rx_arping", "[.cmdcall][.rx]") {
     Detector det;
     Caller caller(&det);
     auto prev_val = det.getRxArping();
-    {
-        std::ostringstream oss;
-        caller.call("rx_arping", {"1"}, -1, PUT, oss);
-        REQUIRE(oss.str() == "rx_arping 1\n");
-    }
-    {
-        std::ostringstream oss;
-        caller.call("rx_arping", {}, -1, GET, oss);
-        REQUIRE(oss.str() == "rx_arping 1\n");
-    }
-    {
-        std::ostringstream oss;
-        caller.call("rx_arping", {"0"}, -1, PUT, oss);
-        REQUIRE(oss.str() == "rx_arping 0\n");
-    }
-    for (int i = 0; i != det.size(); ++i) {
-        det.setRxArping(prev_val[i], {i});
+    if (det.getDestinationUDPIP()[0].str() != "127.0.0.1") {
+        {
+            std::ostringstream oss;
+            caller.call("rx_arping", {"1"}, -1, PUT, oss);
+            REQUIRE(oss.str() == "rx_arping 1\n");
+        }
+        {
+            std::ostringstream oss;
+            caller.call("rx_arping", {}, -1, GET, oss);
+            REQUIRE(oss.str() == "rx_arping 1\n");
+        }
+        {
+            std::ostringstream oss;
+            caller.call("rx_arping", {"0"}, -1, PUT, oss);
+            REQUIRE(oss.str() == "rx_arping 0\n");
+        }
+        for (int i = 0; i != det.size(); ++i) {
+            det.setRxArping(prev_val[i], {i});
+        }
     }
 }
 
diff --git a/tests/scripts/test_simulators.py b/tests/scripts/test_simulators.py
index ce7fbd420..bdafc6e9d 100644
--- a/tests/scripts/test_simulators.py
+++ b/tests/scripts/test_simulators.py
@@ -174,8 +174,8 @@ parser.add_argument('rx_hostname', help = 'hostname/ip of the current machine')
 parser.add_argument('settingspath', help = 'Relative or absolut path to the settingspath')
 parser.add_argument('-s', '--servers', help='Detector servers to run', nargs='*')
 args = parser.parse_args()
-if args.rx_hostname == 'localhost':
-    raise RuntimeException('Cannot use localhost for rx_hostname for the tests (fails for rx_arping for eg.)')
+#if args.rx_hostname == 'localhost':
+#    raise RuntimeException('Cannot use localhost for rx_hostname for the tests (fails for rx_arping for eg.)')
 
 if args.servers is None:
     servers = [