Re: tcpdump - tun/tap virtual interfaces

From: Giovanni P. Tirloni (gpt_at_tirloni.org)
Date: 09/28/03

  • Next message: Dambielle Yannick: "Re: tcpdump - tun/tap virtual interfaces" 
    Date: Sun, 28 Sep 2003 01:59:19 -0300
To: freebsd-net@freebsd.org

    * Dambielle Yannick (yannick.dambielle@free.fr) wrote:
    > Hello everybody,
    >
    > I've tried to dump some paquets sent to a virtual interface without any
    > success for a couple of hours so I ask for some helps to the list.
    > I use a FreeBSD 5.0, my kernel has been rebuilt and installed with the
    > following option in order to use a tap virtual interface : device tap
    > The virtual interface has been created (tap0) and I've attached the IP
    > adress 10.0.0.1. It seems ok, I can see it with ifconfig.
    > All the tests are local tests.
    > While I ping 10.0.0.1 (paquets are sent and not lost), I laught a tcpdump -i
    > tap0 from another shell... Nothing is dumped (?!)...
    > Well, if some of you has an idea, I'll be very happy.

     Try sniffing your loopback (lo0) interface.

     --
     Giovanni P. Tirloni <gpt at tirloni.org>
     Fingerprint: 8C3F BEC5 79BD 3E9B EDB8 72F4 16E8 BA5E D031 5C26
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  • Next message: Dambielle Yannick: "Re: tcpdump - tun/tap virtual interfaces"