diff --git a/stp/STP_Tests_IPA.ttcn b/stp/STP_Tests_IPA.ttcn
index c67bc4a..26abc80 100644
--- a/stp/STP_Tests_IPA.ttcn
+++ b/stp/STP_Tests_IPA.ttcn
@@ -38,6 +38,8 @@
 type record of charstring AspNameArray;
 
 modulepar {
+	charstring mp_stp_ipa_ip := "127.0.0.1";
+	charstring mp_local_ipa_ip := "127.0.0.1";
 	integer mp_stp_ipa_port := 5000;
 	integer mp_local_ipa_port := 20000;
 	AspNameArray mp_ipa_as_names := {"ipa-as-loadshare-sender",
@@ -113,7 +115,7 @@
 		  ASP only up to NR_IPA are configured. */
 		port_offset := 100;
 	}
-	vc_IPA[idx].start(IPA_Emulation.main_client(mp_stp_ip, mp_stp_ipa_port, mp_local_ip,
+	vc_IPA[idx].start(IPA_Emulation.main_client(mp_stp_ipa_ip, mp_stp_ipa_port, mp_local_ipa_ip,
 			mp_local_ipa_port + idx + port_offset, g_ccm_pars[idx]));
 }