anchor.diff:  | /               | t-rex-64/dpdk_set_ports/stl-sim 
   | /stl            | Stateless native (py) profiles 
   | /stl/yaml       | Stateless YAML profiles 
  -| /stl/htl        | Stateless HTL profiles 
  +| /stl/hlt        | Stateless HLT profiles 
   | /ko             | Kernel modules for DPDK
   | /external_libs  | Python external libs used by server/clients
   | /exp            | Golden pcap file for unit-tests
  
positive.code:         return [ self.create_stream() ]
  
  
  # dynamic load - used for trex console or simulator
  def register():                                                                         <3>        
      return STLS1()
  ----
  
negative.code: | Feature       |  IXExplorer  |TRex | Description 
  | Line rate       | Yes |Almost ~15MPPS/core|
  | Multi stream    | 255 | [green]*Unlimited* |
  | Packet build flexibility | Limited | [green]*Scapy- Unlimited* | e.g GRE/VXLAN/NSH is supported. Can be extended to future protocols
  | Packet Field engine      | limited | [green]*Unlimited* |
  | Tx Mode | Continues/Burst/Multi burst | Continues/Burst/Multi burst|
  | ARP Emulation | Yes | Not yet - workaround |
  