anchor.diff:  ----
    - port_limit      : 2    
       port_info       :  # set eh mac addr 
  -    - dest_mac        :   [0x1,0x0,0x0,0x1,0x0,0x00] <1>
  -      src_mac         :   [0x2,0x0,0x0,0x2,0x0,0x00] <2>
  -    - dest_mac        :   [0x3,0x0,0x0,0x3,0x0,0x00] <3>
  -      src_mac         :   [0x4,0x0,0x0,0x4,0x0,0x00] <4>
  +    - dest_mac        :   [0x0,0x0,0x0,0x1,0x0,0x00] <1>
  +      src_mac         :   [0x0,0x0,0x0,0x2,0x0,0x00] <2>
  +    - dest_mac        :   [0x0,0x0,0x0,0x3,0x0,0x00] <3>
  +      src_mac         :   [0x0,0x0,0x0,0x4,0x0,0x00] <4>
   ----
   <1>  Correspond to TRex port 0 - should be Router TenG 0/0/0 mac-address
   <2>  Should be distinc mac-addrees, router should be configure to sent to this mac-addrees
  
positive.code: [source,python]
  ----
  interface TenGigabitEthernet0/0/0       
   mac-address 0100.0001.0000
   mtu 4000 
   ip address 11.11.11.11 255.255.255.0
  !         
  `
  interface TenGigabitEthernet0/0/1       
   mac-address 0300.0003.0000
   mtu 4000 
   ip address 22.11.11.11 255.255.255.0
  !         
  
negative.code: 
  [source,python]
  ----
   arp 11.11.11.12 0000.0002.0000 ARPA  <1>
   arp 12.11.11.12 0000.0004.0000 ARPA  <2>
  ----
  <1> Destination mac-addrees of packets sent from If 0/0/0 is matched to TRex source mac-address port-0
  <2> Destination mac-addrees of packets sent from If 0/0/1 is matched to TRex source mac-address port-1
  