I connect to internet using 3G/HSPA modem and I am trying to monitor PPP traffic. I would like to see PPP frames as they go in and out ppp0 interface. I run wireshark on ppp0 interface but it shows weird "Linux cooked capture" instead of PPP protocol. Please, see the picture for details. Is there any way to see real PPP traffic instead of this dummy 'Linux cooked capture' eg. like in ethernet case?