Consider that we are working on a Local Area (LAN). In this case, I use the mac address of the destination device for destination MAC address for ethernet header. This is working.
But, I don't know, which Mac address should be used on Global Network (WAN).
- Mac address of the Router of destination device?
- Mac address of the Router of source device?
- Mac address of the destination device?
I draw a schema to explain my question. But I'd needed at least 10 reputation to post images.