Thanks to all for the replies!! In the previous mail I'forgot to say that I've already implemented a solution based on mac filtering, but in this case the same wireless channel would be shared among different "virtual" visibility scopes and the emulation is less realistic. I'd like to compare this solution to a second one where the nodes do not share the same channel, and then chose the one that fits my experiment's requisites. bye Giuseppe Siracusano -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html