+| | ... | ${tg} | ${tg_if1} | ${dut1} | ${dut1_if2}
+| | ... | 10.10.10.2 | 20.20.20.1 | ${dut1_if1_mac} | ${0}
+| | Then Send IPv4 ping packet and verify headers
+| | ... | ${tg} | ${tg_if1} | ${dut1} | ${dut1_if1}
+| | ... | 10.10.10.2 | 10.10.10.1 | ${dut1_if1_mac} | ${0}
+| | Then Send IPv4 ping packet and verify headers
+| | ... | ${tg} | ${tg_if1} | ${tg} | ${tg_if2}
+| | ... | 10.10.10.2 | 20.20.20.2 | ${dut1_if1_mac} | ${1}
+| | Then Send IPv4 ping packet and verify headers