client_cidr_generator

import math

def vpcnum(n):
  Y,X = math.modf( (n-1)/float(16) )
  x = "10.{0}.{1}.0".format(int(X),int(Y*256))
  return x

def client(n):
  clientNum = (n*2 + 16)
  return (vpcnum(clientNum-1),vpcnum(clientNum))

print [  (x,client(x)) for x in range(1,2041)]


import csv
with open("clients.csv", "wb") as csv_file:
  writer = csv.writer(csv_file, delimiter=',')
  data =  [ (x,client(x)) for x in range(1,2041)  ]
  for clientnum, (vpc1, vpc2) in data:
    writer.writerow((clientnum,vpc1+"/20",vpc2+"/20"))