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I fixed Add Even Odd in P4 #2125
This is a P4 Even Odd code:
We defined a new packet header "operation", with.
number = the 7 bits of the number
v = bit 0 of the number will be used to define if it is even or odd
flag = will be 0 if even, or 1 if odd
Let us assume that the operation header is carried over Ethernet and uses
the Ethertype 0x123 to indicate the presence of the header.
When a packet arrives to the switch it is validated the header operation.
Then it is verified the last bit of the number. Is odd if its last digit
is 1; it is even if its last digit is 0. The result will be set in flag.