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      1 /* Sample P4 program */
      2 header_type ethernet_t {
      3     fields {
      4         dstAddr : 48;
      5         srcAddr : 48;
      6         etherType : 16;
      7     }
      8 }
      9 
     10 parser start {
     11     return parse_ethernet;
     12 }
     13 
     14 header ethernet_t ethernet;
     15 
     16 parser parse_ethernet {
     17     extract(ethernet);
     18     return ingress;
     19 }
     20 
     21 action action_0(){
     22     no_op();
     23 }
     24 
     25 table table_0 {
     26    reads {
     27       ethernet.etherType : exact;
     28    }
     29    actions {
     30       action_0;
     31    }
     32 }
     33 
     34 control ingress {
     35     apply(table_0);
     36 }
     37