diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn
index 0c163457d..3d4810923 100644
--- a/ggsn_tests/GGSN_Tests.ttcn
+++ b/ggsn_tests/GGSN_Tests.ttcn
@@ -816,6 +816,7 @@ module GGSN_Tests {
 		T_default.stop;
 	}
 
+	/* Test IPv6 context activation for dynamic IPv6 EUA without request of IPv6 DNS */
 	testcase TC_pdp6_act_deact() runs on GT_CT {
 		f_init();
 
@@ -824,6 +825,7 @@ module GGSN_Tests {
 		f_pdp_ctx_del(ctx, '1'B);
 	}
 
+	/* Test IPv6 context activation for dynamic IPv6 EUA wirh request of IPv6 DNS in PCO */
 	testcase TC_pdp6_act_deact_pcodns() runs on GT_CT {
 		f_init();
 
@@ -833,6 +835,7 @@ module GGSN_Tests {
 		f_pdp_ctx_del(ctx, '1'B);
 	}
 
+	/* Test PDP context activation for dynamic IPv6 EUA with IPv6 DNS in PCO and router solicitation/advertisement */
 	testcase TC_pdp6_act_deact_icmp6() runs on GT_CT {
 		f_init();
 
@@ -850,6 +853,7 @@ module GGSN_Tests {
 		f_pdp_ctx_del(ctx, '1'B);
 	}
 
+	/* Test PDP context activation for dynamic IPv4 EUA without DNS request */
 	testcase TC_pdp4_act_deact() runs on GT_CT {
 		f_init();
 		var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
@@ -857,6 +861,7 @@ module GGSN_Tests {
 		f_pdp_ctx_del(ctx, '1'B);
 	}
 
+	/* 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 PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
@@ -865,6 +870,7 @@ module GGSN_Tests {
 		f_pdp_ctx_del(ctx, '1'B);
 	}
 
+	/* Test PDP context activation for dynamic IPv4 EUA with IPv4 DNS in PCO */
 	testcase TC_pdp4_act_deact_pcodns() runs on GT_CT {
 		f_init();
 		var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));