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Thu Sep 17 00:04:32 CEST 2009 · http://mail.python.org/pipermail/python-dev/2009-September/091785.html

Eric.

"Greg Ewing" <greg.ewing at canterbury.ac.nz> wrote:

>Nick Coghlan wrote:
>
>> Or, to put it another way, given an arbitrary host in a network (e.g.
>> your own machine or the default gateway) and the netmask for that
>> network, calculate the network address.
>
>Some people have claimed that the gateway address of a
>network isn't necessarily the zero address in that network.
>If that's true, then you *can't* calculate the network
>address from a host address and a netmask -- there isn't
>enough information. Furthermore, an IPNetwork object
>needs to be able to represent a network address whose
>address part contains bits that aren't in the mask.

I don't see why that would be considered a network address, then. It sounds to me like that's a host address plus a netmask.

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[Python-Dev] PEP 3144 review.