Re: Jpcap -> Warning: arptype 802 not supported by libpcap - falling back to cooked

[Guy Harris <guy () alum mit edu>]

On Mar 7, 2004, at 3:52 PM, Paranoid Penguin wrote:

> I installed the latest version of libpcap (2004.03.06) and 
> jpcap(0.01.14). Kismet and ethereal work fine with the libpcap. But 
> the exampleprogram of jpcap gives the following:
> Warning: arptype 802 not supported by libpcap - falling back to cooked 
> socket,although it still receives packets.
> Now i'm building a program that also uses jpcap and i get the same 
> warning, but it doesn't detect networks, while it should...
> Any idea?
> I googled the warning and only found reactions like "your libpcap 
> version is to old, install a new one"... i installed the latest 
> versions so... (also tried it with the last stable libpcap0.8.1 
> release).

...but you're not necessarily running with that version - if you were, 
you wouldn't be getting that error.

I don't know how jpcap finds libpcap - but if, for example:

        1) it's dynamically linked with libpcap, or loads it at run time;

        2) your system comes with a version of libpcap prior to 0.7.2;

        3) the libpcap you installed was a static library;

installing a new version won't help (except with the current CVS 
version on those OSes that use the GNU linker, and even there you have 
to do "make shared" and "make-install-shared" *AND* somehow make sure 
that jpcap picks up the version you installed rather than the version 
that came with the system) - you'd have to somehow arrange to rebuild 
jpcap with the version you installed.

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