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apackeer/gist:3825451

Created October 3, 2012 06:49
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Convert CIDR mask to dotted decimal
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gistfile1.py
from socket import inet_ntoa
from struct import pack
bits = 0
mask = 25
for i in xrange(32 - mask,32):
bits |= (1 << i)
dotted_decimal = inet_ntoa(pack('>I', bits))
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