diff --git a/pcu/PCU_Tests.cfg b/pcu/PCU_Tests.cfg
index db6f56e..7681544 100644
--- a/pcu/PCU_Tests.cfg
+++ b/pcu/PCU_Tests.cfg
@@ -8,6 +8,7 @@
 
 [MODULE_PARAMETERS]
 SGSN_Components.mp_nsconfig := {
+	address_family := AF_INET,
 	local_ip := "127.0.0.1",
 	local_udp_port := 23000,
 	remote_ip := "127.0.0.1",
diff --git a/sgsn/SGSN_Tests.cfg b/sgsn/SGSN_Tests.cfg
index 5167750..566c804 100644
--- a/sgsn/SGSN_Tests.cfg
+++ b/sgsn/SGSN_Tests.cfg
@@ -14,14 +14,17 @@
 [MODULE_PARAMETERS]
 SGSN_Tests.mp_nsconfig := {
 	{
+		remote_proto := AF_INET,
 		local_ip := "127.0.0.103",
 		remote_ip := "127.0.0.10"
 	},
 	{
+		remote_proto := AF_INET,
 		local_ip := "127.0.0.103",
 		remote_ip := "127.0.0.10"
 	},
 	{
+		remote_proto := AF_INET,
 		local_ip := "127.0.0.103",
 		remote_ip := "127.0.0.10"
 	}