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Re: iface in promiscuous mode

2008/6/12 guildivernos guildivernos <guildivernos@xxxxxxxxx>:
> Hi list,

Hi!

> I need to check if my iface is in promiscuous mode. I can check this
> with ioctl, but this only works if I set the iface in promisc with
> ifconfig (no with tcpdump). I saw that tcpdump uses setsockopt to put
> the iface in promiscuous mode, but I cant find the way to use
> getsockopt to check the iface state. Is there any way of doing this ?
>

There is another way. Netlink sockets can be used to do the trick,
since they can bring interface state for you. Take a look at a utility
called ifchk (http://www.noorg.org/ifchk/ifchk.html). This is a good
worakaround for the same trouble you are reporting.


Cheers
Mauad

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