No, but that's a big if. This is 2005, and A-, B-, C- subnets are so 1980s. If I have a /23 subnet, I won't be using 255 exclusively. 
     $ ifconfig | awk 'NR == 2 {print $4}'
     Mask:255.255.224.0

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In reply to Re^3: bitwise operators by Anonymous Monk
in thread bitwise operators by gtdunlap

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