Yes, that is correct. The first byte of the payload needs to be read not a field in a the protocol defined header.. >OK, so it's just an arbitrary byte. Not anything in a standard header that needs to be matched. >I'm asking because we could add the protocol definition for what you need, so we don't need to use raw expressions. Thanks, Raul -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html