anchor.diff:  [source,python]
   ----
   interface TenGigabitEthernet0/0/0       
  - mac-address 0100.0001.0000
  + mac-address 0000.0001.0000
    mtu 4000 
    ip address 11.11.11.11 255.255.255.0
   !         
   `
   interface TenGigabitEthernet0/0/1       
  - mac-address 0300.0003.0000
  + mac-address 0000.0003.0000
    mtu 4000 
    ip address 22.11.11.11 255.255.255.0
   !         
  
positive.code: * to send only from TRex port 1 do this:
  ...........................................
  $./t-rex-64 -f cap2/dns.yaml -m 1  -d 100  -l 1000 --lo --lm 2
  ...........................................
  
  
  
negative.code: [source,python]
  ----
  interface TenGigabitEthernet0/0/0
   mac-address 0000.0001.0000                     <1>
   mtu 4000                                       <2>
   ip address 11.11.11.11 255.255.255.0           <3>
   ip policy route-map p1_to_p2                   <4>
  