"VTY: Unknown Command: mtu 1400 apply" GGSN_Tests.ttcn:2420 GGSN_Tests control part GGSN_Tests.ttcn:1412 TC_pdp4_act_deact_mtu testcase "VTY: Unknown Command: mtu 1400 apply" GGSN_Tests.ttcn:2436 GGSN_Tests control part GGSN_Tests.ttcn:1119 TC_pdp6_act_deact_mtu testcase "VTY: Unknown Command: mtu 1400 apply" GGSN_Tests.ttcn:2451 GGSN_Tests control part GGSN_Tests.ttcn:1778 TC_pdp46_act_deact_mtu testcase