Configuration:

• set 4 different local ipv4 addresses on interface dut1_if2
• create 4 geneve tunnel interfaces (l3_mode ensabled) with
  local addresses equal to dut1_if2 ipv4 addresses
• needed to add next node for geneve4-input
• create 4 ipv4 routes for 4 different sets of src_ip and dst_ip
  ranges; each range routed to different geneve tunnel interface
• TG will send packet flows with 4 different sets of src_ip and
  dst_ip ranges
• start with uni-directional tests
• check if bi-directional flow generation is possible with current
  TRex implementations (STL, ASTF)