diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.generic.oaisim.local_mme.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.generic.oaisim.local_mme.conf
index b1ff94735d1e4f612d1fea9683b9d541a73b1f41..b405f22025eb8186dba8cb2f5fcf45bb4749d1d3 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.generic.oaisim.local_mme.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.generic.oaisim.local_mme.conf
@@ -115,8 +115,8 @@ eNBs =
         ENB_INTERFACE_NAME_FOR_S1_MME            = "tun2";
         ENB_IPV4_ADDRESS_FOR_S1_MME              = "192.188.2.2/24";
 
-        ENB_INTERFACE_NAME_FOR_S1U               = "tun3";
-        ENB_IPV4_ADDRESS_FOR_S1U                 = "192.188.3.3/24";
+        ENB_INTERFACE_NAME_FOR_S1U               = "lo";
+        ENB_IPV4_ADDRESS_FOR_S1U                 = "127.0.0.1/8";
         ENB_PORT_FOR_S1U                         = 2153; # Spec 2152
     };