[Click] help:question about ToDevice()

[Beyers Cronje]

Hi,

Change your config to:

  -> spoofer::MACIPSpoofer(11:22:33
>
> :44:55:66, me0) //src only
>   -> Print(*spoofing----,NBYTES 200)


-> Queue

  -> ToDevice(eth0);



On 11/10/06, 静 李 <lastlijing at yahoo.com.cn> wrote:
>
> The question is in the "maillistletter.txt".
>
>   Because  my computer  cannot copy the letter here,
> so I have to add it in the  append .  :)
>
> waiting .
>
>
>
>
>
>
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> letter to mail list
>
> Hi :
>
> I have made a element :MACIPSpoofer(my_eth0,my_ip) by myself.
> It changes the input packets src_mac ,and src_ip to
> my_eth0,my_ip  respectivly.
>
> the test configuration and  the run result are:
>
> congfiguration-1:
>
> AddressInfo(me0 10.0.0.1);
>   spew :: RatedSource(ACTIVE true, RATE 2, DATA
>       'test-test-test')
>    -> IPEncap(200, 10.0.0.3,255.255.255.255)
>    ->EtherEncap(0x0800, 12:34:56:78:9a:bc, ff:ff:ff:ff:ff:ff)
>    -> Print(*setupself,NBYTES 200)
>   -> spoofer::MACIPSpoofer(11:22:33:44:55:66, me0) //src only
>   -> Print(*spoofing----,NBYTES 200)
>   -> ToDevice(eth0);
>
> result:
>   *setupself:   55 | ffffffff ffff1234 56789abc 0800
>           4500 00290000 0000fac8 b60a0a00 0003ffff ffff
>           7465 73742d74 6573742d 74657374 0a202020 202020
> *spoofing----:   55 | ffffffff ffff1122 33445566 0800
>           4500 00290000 0000fac8 b60a0a00 0001ffff ffff
>           7465 73742d74 6573742d 74657374 0a202020 202020
>
> it really works ,change src_mac: 123456789abc -> 112233445566
>                       ip_src : 10.0.0.3 -> 10.0.0.1
>
>
> But, when I want to use MACIPSpoofer() to the real net  packets ,it
> doesnot work.
>
>   configuration-2:
>
>   in1 :: FromDevice(eth0, PROMISC 0);
>   ip_class :: Classifier(12/0800, -);  // ip pkts
>   in1 -> ip_class;
>
>   ip_class[1] -> Discard;
>
>    ip_class[0]
>   -> spoofer::MACIPSpoofer(11:22:33:44:55:66, me0) //src only
>   -> Print(*spoofing----,NBYTES 200)
>   -> ToDevice(eth0);
>
>   It reads packets from eth0 ,picks out IP-packets ,and spoofs mac and ip
> last send it out to eth0 .
>
> But when I run the configuration ,it does NOT work:
> # ./click  ../conf/local/sendtest.click
> #'spoofer :: MACIPSpoofer' push output 0 connected to 'Print at 6 :: Print'
> pull input 0
> Router could not be initialized!
>
>   an other kind of error message:
> #agnostic 'spoofer :: MACIPSpoofer' in mixed context: push input 0, pull
> output 0
> Router could not be initialized!
>
>
>     if I change "ToDevice(eth0) " to "Discard", then it works correctly as
> before.
>    I have no idea why this happens. Why I can't  use "ToDevice(eth0)" as
> in "Configuration-1" ??
>
>
>    Thanks in advance.
>
>
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>