diff --git a/ci-scripts/yaml_files/5g_rfsimulator/mini_nonrf_config.yaml b/ci-scripts/yaml_files/5g_rfsimulator/mini_nonrf_config.yaml
index 037fa1e41e..10fb5bcdfd 100644
--- a/ci-scripts/yaml_files/5g_rfsimulator/mini_nonrf_config.yaml
+++ b/ci-scripts/yaml_files/5g_rfsimulator/mini_nonrf_config.yaml
@@ -175,7 +175,7 @@ upf:
   support_features:
     enable_bpf_datapath: no    # If "on": BPF is used as datapath else simpleswitch is used, DEFAULT= off
     enable_snat: yes           # If "on": Source natting is done for UE, DEFAULT= off
-  remote_n6_gw: localhost      # Dummy host since simple-switch does not use N6 GW
+  remote_n6_gw: 127.0.0.1      # Dummy host since simple-switch does not use N6 GW
   upf_info:
     sNssaiUpfInfoList:
       - sNssai: *embb_slice1
diff --git a/ci-scripts/yaml_files/5g_rfsimulator_e1/mini_nonrf_config_3slices.yaml b/ci-scripts/yaml_files/5g_rfsimulator_e1/mini_nonrf_config_3slices.yaml
index 369eb6356a..589e8ab772 100644
--- a/ci-scripts/yaml_files/5g_rfsimulator_e1/mini_nonrf_config_3slices.yaml
+++ b/ci-scripts/yaml_files/5g_rfsimulator_e1/mini_nonrf_config_3slices.yaml
@@ -193,7 +193,7 @@ upf:
   support_features:
     enable_bpf_datapath: no    # If "on": BPF is used as datapath else simpleswitch is used, DEFAULT= off
     enable_snat: yes           # If "on": Source natting is done for UE, DEFAULT= off
-  remote_n6_gw: localhost      # Dummy host since simple-switch does not use N6 GW
+  remote_n6_gw: 127.0.0.1      # Dummy host since simple-switch does not use N6 GW
   upf_info:
     sNssaiUpfInfoList:
       - sNssai: *embb_slice1