Hello, As I understand currently squid can send client IP address up to the eCap adapter using squid configuration directive *adaptation_send_client_ip.* I needed more information in my eCap adapter so I changed the squid source code to be able to send *Client Port, Destination Address and Destination port* to the eCap adapter. But now my requirement is to be able to pass *source MAC address and destination MAC address* as well to the eCap adapter. But I am not able to understand how I can do it. Can someone please guide me where should I start looking at in squid source code so that the MAC address can be passed up to the eCap adapter. Thanks, Jatin