problem with gethostbyaddr with intranet addresses on MAC

[Sion Arrowsmith]

shailesh  <shaileshk at gmail.com> wrote:
>Python 2.4.4 (#1, Oct 18 2006, 10:34:39)
>[GCC 4.0.1 (Apple Computer, Inc. build 5341)] on darwin
>Type "help", "copyright", "credits" or "license" for more information.
>>>> from socket import *
>>>> x = gethostbyname('google.com')
>>>> x
>'64.233.167.99'
>>>> gethostbyaddr(x)
>('py-in-f99.google.com', [], ['64.233.167.99'])
>>>> e = '192.168.4.123'
>>>> gethostbyaddr(e)
>Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>socket.herror: (1, 'Unknown host')
>>>>

So what are you expecting it to return? Or, to put it another way,
what would you feed to gethostbyname() to get 192.168.4.123 back?
Can you get the "right" answer from host or some other command-
line tool? Can you get an answer from gethostbyaddr() on one of
the other machines on the network? How do they do their name
resolution?

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