| | Vpp create multiple VXLAN IPv4 tunnels | node=${dut1}
| | ... | node_vxlan_if=${dut1_if2} | node_vlan_if=${dut1_if1}
| | ... | op_node=${dut2} | op_node_if=${dut2_if1} | n_tunnels=${vxlan_count}
| | ... | vni_start=${vni_start} | src_ip_start=${dut1_ip_start}
| | ... | dst_ip_start=${dut2_ip_start} | ip_step=${ip_step}
| | Vpp create multiple VXLAN IPv4 tunnels | node=${dut1}
| | ... | node_vxlan_if=${dut1_if2} | node_vlan_if=${dut1_if1}
| | ... | op_node=${dut2} | op_node_if=${dut2_if1} | n_tunnels=${vxlan_count}
| | ... | vni_start=${vni_start} | src_ip_start=${dut1_ip_start}
| | ... | dst_ip_start=${dut2_ip_start} | ip_step=${ip_step}