tap0 in promiscuous mode(TAP/TUN device)
 

Hi All,

I have a need to tap packets and distribute it to different taps based on certain logic.

I have thus been able to do this pretty easily on RHELs that we have - 2.6.32 kernel.
But I have been having problem in making this work on our Fedora systems - > 2.6.39.

The experiment I have been trying has following steps:
1. tunctl -p -t tap0
2. inconfig tap0 up
3. tcpreplay -i tap0 ./*pcap -- transmit packets to tap0
4. tshark -i tap0 -- capture in promiscuous mode

This works perfectly on the RHELs(having older RH kernels), but on Fedora I could never get this to work(with kernels as recent as 3.6.10).

Any pointers is appreciated.

Thanks

I was able to solve this issue -
basically there was a need to allocate the TAP programmatically with appropriate flags before transmitting packets on to the tap.

Thanks