YOU PUT IT IN AN IP PACKET GOING TO AND FROM NODES. IT DOESN'T PERSIST UNTIL THE END, ELSEWISE THE DNS WOULD ALSO HAVE TO PASS BACK MAC ADDRESS DATA AS WELL, BUT YOU DIDN'T THINK IT WAS THAT OBVIOUS TO COUNTER THE NOTION.
Jesus christ, obviously you've never considered what it means to suggest that Jim at the server as an end node would actually see. You really think he sees start node's mac address instead of next node? You're being so dumb. There's only room for one address in an IP packet. You explain how it works WITHOUT TELECOM LEVEL TAGGING, because Jim is not his own telecom. You can't even explain it theoretically, only by attacking others mindlessly.