-| | ... | ${dut1} | ${dut1_if1} | ${subif_index_1}
-| | ... | ${dut2} | ${dut2_if2} | ${subif_index_2}
-| | Then Send and receive ICMPv4 | ${tg} | ${tg_if1} | ${tg_if2}
+| | ... | ${dut1_node} | ${dut1_to_tg} | ${subif_index_1}
+| | ... | ${dut2_node} | ${dut2_to_tg} | ${subif_index_2}
+| | Then Send and receive ICMP Packet
+| | ... | ${tg_node} | ${tg_to_dut1} | ${tg_to_dut2}