diff --git a/ggsn_tests/GGSN_Tests.cfg b/ggsn_tests/GGSN_Tests.cfg
index e97578c..90368b9 100644
--- a/ggsn_tests/GGSN_Tests.cfg
+++ b/ggsn_tests/GGSN_Tests.cfg
@@ -14,8 +14,10 @@
 [MODULE_PARAMETERS]
 GGSN_Tests.m_bind_ip_gtpc := "127.0.42.1"
 GGSN_Tests.m_bind_ip_gtpu := "127.0.42.1"
-GGSN_Tests.m_ggsn_ip_gtpc := "127.0.23.1"
-GGSN_Tests.m_ggsn_ip_gtpu := "127.0.23.1"
+GGSN_Tests.m_ggsn_ip_gtpc := "127.0.0.2"
+GGSN_Tests.m_ggsn_ip_gtpu := "127.0.0.2"
+GGSN_Tests.m_ggsn_ip4_dns1 := "192.168.100.1"
+GGSN_Tests.m_ggsn_ip4_dns2 := "8.8.8.8"
 
 [EXECUTE]
 #GGSN_Tests.TC_dummy
diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn
index 23e7054..06d9dcf 100644
--- a/ggsn_tests/GGSN_Tests.ttcn
+++ b/ggsn_tests/GGSN_Tests.ttcn
@@ -23,6 +23,9 @@
 
 		charstring m_ggsn_ip_gtpc := "127.0.0.6";
 		charstring m_ggsn_ip_gtpu := "127.0.0.6";
+
+		charstring m_ggsn_ip4_dns1 := "192.168.100.1"
+		charstring m_ggsn_ip4_dns2 := "8.8.8.8"
 	}
 
 	type set PdpContext {
@@ -954,6 +957,8 @@
 	/* Test PDP context activation for dynamic IPv4 EUA with IPv4 DNS in IPCP */
 	testcase TC_pdp4_act_deact_ipcp() runs on GT_CT {
 		f_init();
+		var OCT4 ggsn_ip4_dns1 := f_inet_addr(m_ggsn_ip4_dns1);
+		var OCT4 ggsn_ip4_dns2 := f_inet_addr(m_ggsn_ip4_dns2);
 		var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
 		ctx.pco_req := valueof(ts_PCO_IPv4_DNS_IPCP);
 		f_pdp_ctx_act(ctx);
@@ -963,8 +968,12 @@
 		}
 		/* verify IPCP contains both primary and secondary DNS */
 		var IpcpPacket ipcp := dec_IpcpPacket(f_PCO_extract_proto(ctx.pco_neg, '8021'O));
-		if (not match(ipcp, tr_IPCP_Ack_DNS(0, 'C0A86401'O, '08080808'O))) {
-			setverdict(fail, "Primary/Secondary DNS not found in IPCP");
+		if (not match(ipcp, tr_IPCP_Ack_DNS(0, ggsn_ip4_dns1, ggsn_ip4_dns2))) {
+			if (not match(ipcp, tr_IPCP_Ack_DNS(0))) {
+				setverdict(fail, "Primary/Secondary DNS PCO IPCP option not found");
+			} else {
+				setverdict(fail, "Primary/Secondary DNS PCO IPCP option found but not matching expected values");
+			}
 		}
 		f_pdp_ctx_del(ctx, '1'B);
 	}