anchor.diff:  ** *Action*:  The next stream to go after this stream is finished. Valid for Burst/Continuous mode
   
   
  -=== Statful vs Stateless 
  +=== Stateful vs Stateless 
   
   TRex Stateless support is basic L2/L3 tests more for Switch/Router. 
   With Stateless it is possible to define a Stream that has a *one* packet template, define a program to change any fields in the packet and run it in continues/burst/multi-burst mode.
  
positive.code: 
  *Discussion*::
  
  The following are the main traffic profiles formats. The native is the preferred one. There is a separation between how the traffic is defined and how to control/activate it. The API/Console/GUI can load a traffic profile and start/stop/get a statistic. Due to this separation it is possible to share traffic profiles.
  
  .Traffic profiles formats
  [cols="1^,1^,10<", options="header",width="80%"]
  |=================
  | Profile Type       | Format | Description  
  | Native             | Python | A native Python like. Have the most flexibility. any format can be converted to native using `stl-sim` using --native option
  | HLT                | Python | HLT arguments like
  | YAML               | YAML   | It is the common denominator traffic profile. We suggest not to use it by human as it is not possible to compose packet using scapy. it is used to move profile between GUI and Console or API. It can be converted to native using the stl-sim using --native switch 
  |=================
  
  
  
negative.code:                             ]).get_streams()
  
  ----
  <1> Stream S0 is with self_start=True, start after 10 sec 
  <2> S1 with self_start=False. S0 activates it
  <3> S2 is activated by S1
  
  To run the simulator run this command
  
  [source,bash]
  ----
  $ ./stl-sim -f stl/stl/burst_3pkt_60pkt.py -o b.pcap 
  ----
  
  The pcap file should have 60 packets. The first 10 packets have src_ip=16.0.0.1. The next 20 packets has src_ip=16.0.0.2. The next 30 packets has src_ip=16.0.0.3
  
  This profile can be run from Console using this command 
  
  [source,bash]
  ----
  TRex>start -f stl/stl/burst_3pkt_60pkt.py --port 0
  ----
  
  ==== Tutorial: Multi Burst mode
  