[Winpcap-bugs] Re: Unable to list devices for interfaces containingmany IPv6 addresses

[Bhairav]

Hi GV,
After quite a bit of fiddling with trying to build from source (thx for your
pointers in using the VS 2005 Express), I was able to prove the below theory
of the 16 addresses.

Once I bumped up this value (to 1000) and replaced the original Packet.dll,
I was able to get the list of interfaces by using the windump command.

I am not sure why there is such a low limit (or why there is a limit at
all), but hopefully this helps in perhaps fixing the issue faster?

Thanks,
Bhairav

On Wed, Oct 22, 2008 at 6:30 PM, Bhairav <stan2k08 at gmail.com> wrote:

> Hi GV,
> Thanks for responding and confirming my emails are getting there :).
>
> Just wanted to let you know that I had looked at the code a little and
> think that part of the reason I am running into the issue is because there
> is a very low number IPv6 addresses being allowed, signified by the value of
> MAX_NETWORK_ADDRESSES.  Currently, that is set to 16.  So, it seems winpcap
> will only look up 16 IPv6 addresses before it decides to quit due to
> insufficient storage.
>
> HTH,
> Bhairav
>
>
> On Wed, Oct 22, 2008 at 12:26 PM, Gianluca Varenni <
> gianluca.varenni at cacetech.com> wrote:
>
>>  Your message has been correctly received on the mailing list, but I
>> haven't found time to look at the WinPcap source code and understand exactly
>> what the problem is.
>>
>> Have  a nice day
>> GV
>>
>> ----- Original Message -----
>> *From:* Bhairav <stan2k08 at gmail.com>
>> *To:* winpcap-bugs at winpcap.org
>> *Sent:* Tuesday, October 21, 2008 6:02 PM
>> *Subject:* [Winpcap-bugs] Re: Unable to list devices for interfaces
>> containingmany IPv6 addresses
>>
>> Hello All,
>> I had sent the previous email(s) for the very first time.  Wondering if it
>> was even received by the list.  If so, any responses would be really
>> appreciated.
>>
>> Thanks,
>> Bhairav
>>
>> On Sat, Oct 18, 2008 at 5:20 PM, Bhairav <stan2k08 at gmail.com> wrote:
>>
>>> Ooops ... apologies -- forgot to attach the file.  Attached now.
>>> Thanks,
>>> Bhairav
>>>
>>>
>>> On Sat, Oct 18, 2008 at 5:13 PM, Bhairav <stan2k08 at gmail.com> wrote:
>>>
>>>> Hello,
>>>> I have captured debug information for an issue I am seeing according to
>>>> the bug page on the WinPcap page.  Here are the details as requested on the
>>>> page:
>>>>
>>>> 1) WinPcap version is 4.1 beta4.  Please note, I was seeing the issue
>>>> with 4.0.2 previously and decided to try out this beta version before
>>>> reporting the problem.  The debug file created is with this beta version
>>>> 2) The output of windump -D is blank (the debug file will make it clear
>>>> why this is the case)
>>>> 3) Win2k3
>>>> 4) 2 Network adapters installed - both HP NC324i PCIe Dual Port Gigabit
>>>> Server, but I think the issue is independent of the adapters themselves
>>>> 5) The issue is this:  I have about 500 IPv4 and 500 IPv6 virtual
>>>> addresses on one (out of 2) interfaces.  At the application level (wireshark
>>>> and windump) I am not able to list the interfaces with these numbers of
>>>> addresses.  I could have 1000 IPv4 addresses without a problem (in listing
>>>> the interfaces) -- but whenever I get to a higher number of IPv6 (eg 1000
>>>> IPv4 + 14 IPv6), there becomes a problem listing the interfaces (a few IPv6
>>>> addresses is not a problem though). Looking at the debug file, I see the
>>>> following error:
>>>>  [000005B4] 2008-10-18 16:34:23     The space in
>>>> AdInfo->NNetworkAddresses is not large enough, failing
>>>>
>>>> Ideally, I wanted to use 1000 IPv4 + 1000 IPv6 addresses.  But, perhaps
>>>> winpcap is not able to get enough space for all the IPs?
>>>>
>>>> Is it possible to increase the available storage space to accommodate
>>>> these numbers of IP addresses.
>>>>
>>>> Thanks,
>>>> Bhairav
>>>>
>>>>
>>>
>>  ------------------------------
>>
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>>
>
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