Re: Short ipv4 addresses in filter

[Guy Harris <guy () alum mit edu>]

On Jun 3, 2011, at 1:05 PM, Jakub Zawadzki wrote:

> > > Date:   Sun Mar 3 21:42:54 2002 +0000
> > > From Heikki Vatiainen: make "get_host_ipaddr()" require dotted-quad IP
> > > addresses to really be quads, i.e. have four numbers.
>
> [1] http://anonsvn.wireshark.org/viewvc?revision=4854&view=revision

To quote his ethereal-dev message:

> Here is a fix to catch incomplete dotted-quad IP addresses that
> may lead into more surprises than necessary.
>
> In run into a problem when trying to use CIDR notation with shorthand
> 130.230/16. Ethereal did not complain, but did not show any matches
> either. After some debugging I found out that since inet_aton() was
> involved, the address became 0x820000e6. This behavior seems to be a
> leftover from the classful days when using an address like "18.5" was
> treated as net.host and turned automagically into 18.0.0.5.
>
> Here is a patch for epan/resolv.c:get_host_ipaddr() which catches
> incomplete dotted IP addresses.

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