[Click] Error!

[Beyers Cronje]

Even with your config you could run into problems as you are assuming all
packets are IP packets. The correct way is to first check for valid IP
packets:

FromDevice(lo) -> Classifier(12/0800) -> Strip(14) -> CheckIPHeader() ->
IPClassifier(tcp) -> MyElem(1000) -> Discard;

2010/4/20 kkkkk5kou <kkkkk5kou at 126.com>

> The input of CheckIPHeader() should be IP packets. But the output of
> FromDevice() is MAC frames. Try this:
>
> FromDevice(lo) -> Strip(14) ->
> CheckIPHeader()->IPClassifier(tcp)->MyElem(1000)->Discard;
>
>
>
> 在2010-04-20 23:53:54，"Mai Ali" <maialieg at hotmail.com> 写道：
> >
> >
> >could anybody tell me what's wrong with this?
> >
> >
> >
> >FromDevice(lo) ->
> CheckIPHeader()->IPClassifier(tcp)->MyElem(1000)->Discard;
> >
> >
> >
> >for the CheckIPHeader, it gives me error "IP header check faild: bad IP
> version"
> >
> >
> >
> >thanks!
> >
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