Hi again, I've tried to convert the example script "inject.pl" into an executable file though pp and then, with GDB, I've analyzed the SIGSEGV causes, the output is the following:

Program received signal SIGSEGV, Segmentation fault.
0xb78ab7a7 in madwifing_openmon_cb (context=0x890eda8) at drv_madwifin
+g.c:71
71    drv_madwifing.c: File o directory not exists.
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Now I am pretty sure that the library search a file which has the _drv and the  driver parameters, the situation seems more intrigate than I expected, I've already examined the Lorcon2.so file which is auto generate inside blib/arch/auto/Net/ ... but it doesn't seem to exist the  madwifing_openmon_cb symbols, any hints? Thanks again Rob, Edoardo M.