Wireshark-users: Re: [Wireshark-users] packet from wired/wireless system??

From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Mon, 12 Oct 2009 14:10:55 -0700
On Oct 12, 2009, at 5:49 AM, biswas thapa wrote:

Is there anyway to find out via wireshark if the packet is initiated from a wired client(ethernet interface) a wireless client(wireless interface)??
There's no general way to find out whether a routed packet (such as an  
IP packet) that your machine received was originally sent over an  
Ethernet interface, a Wi-Fi interface, a GPRS/EDGE/HS*PA/EV-DO/...  
interface, an ATM interface, a PPP-over-a-dialup-line interface,  
etc..  All you know is the type of interface over which it's received,  
but somebody could have sent you a packet over an Ethernet interface  
and it might have been routed to you over a Wi-Fi interface, for  
example.