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

[Gianluca Varenni]

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 
  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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