diff --git a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
index 8043eac8f..05da04f9b 100644
--- a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
@@ -1352,6 +1352,7 @@ int getFirstUDPDestination() {
 
 void setFirstUDPDestination(int value) {
     LOG(logINFO, ("Setting first entry to %d\n", value));
+    bus_w(CONTROL_REG, bus_r(CONTROL_REG) & ~CONTROL_RX_ENDPTS_START_MSK);
     bus_w(CONTROL_REG,
           bus_r(CONTROL_REG) | ((value << CONTROL_RX_ENDPTS_START_OFST) &
                                 CONTROL_RX_ENDPTS_START_MSK));
diff --git a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
index 0981918ef..eea091e70 100644
--- a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
+++ b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
@@ -9249,7 +9249,7 @@ int set_udp_first_dest(int file_des) {
             validate(&ret, mess, arg, retval, "set udp first destination", DEC);
             if (ret == OK) {
                 firstUDPDestination = arg;
-                configure_mac();
+                //configure_mac();
             }
         }
     }