making setup file with serial key ,One pc one use

I think you could in this way...

Set the "SerialNumberTemplate" to <#%%%-%%%#-#%%%-%%%#-%>
Where first 12 % symbol represents digit of the IP Address of the PC and last % symbol is the digit which makes the addition of IP Address digits and this digit divisible by 7.'#' Symbol in this template is don't care (as usual)

I mean, suppose IP Address is 10.231.140.175

Firstly standardize this IP Address to 010.231.140.175 format
Then fill any digit on don't care places (i.e. #'s)
Here we filled our don't care numbers 5, 4, 6 and 2 respective blocks
Now you need to think a digit for the last % symbol
Our IP address total is 0+1+0+2+3+1+1+4+0+1+7+5 = 25

So last digit could be '3' that makes % digits divisible by 7

In this way, serial code would be:  5010.2314.6140.1752-3