anchor.diff:  # notes:
   # - mode:stop -> the filter is ignored
   # - id and host MUST match the id of the started tcpdump
  -# usage: host id:[string] mode:[start|stop] local-file-name:"path_and_filename" filter:"tcpdump filter string"
  -exec 006-tcpdump beta id:0001 mode:stop local-file-name:"/tmp/dumps/001_netperf_alpha_to_beta" filter:"ignored"
  +# usage: host id:[string] mode:[start|stop] local-file-name-[absolute|relative]:"path_and_filename" filter:"tcpdump filter string"
  +exec 006-tcpdump beta id:0001 mode:stop local-file-name-absolute:"/tmp/dumps/001_netperf_alpha_to_beta" filter:"ignored"
  
positive.code: # notes:
  # - [id] should be a self specified unique id string
  # - mode:start -> the local-file-name is ignored
  # usage: host id:[string] mode:[start|stop] local-file-name:"path_and_filename" filter:"tcpdump filter string"
  exec 006-tcpdump beta id:0001 mode:start local-file-name:"ignored" filter:"tcp and dst port 30000"
  
  
  # netperf
  
negative.code: # - flow_length is in seconds, or if negative, in bytes
  # - flow_offset is the time in seconds after which the flow is started
  # - netserver is the control(!) port of the netserver
  # usage: host sink:[name] id:[string] source_port:[port] sink_port:[port] flow_length:[seconds|-bytes] flow_offset:[seconds] netserver:[port]
  exec 005-netperf alpha sink:beta id:0001 source_port:20000 sink_port:30000 flow_length:6 flow_offset:1 netserver:29999
  exec 005-netperf beta sink:alpha id:0002 source_port:20001 sink_port:30001 flow_length:6 flow_offset:3 netserver:29998
  
  
  sleep 2
  