802.11 frame:addressing Internet R1 router AP R1 MAC addr AP MAC addr 5 dest.address source address 802.3 frame 5 55 AP MAC addr H1 MAC addr R1 MAC addr address 1 address 2 address 3 802.11 frame 6:Wireless and Mobile Networks 6-246: Wireless and Mobile Networks 6-24 Internet router AP H1 R1 AP MAC addr H1 MAC addr R1 MAC addr address 1 address 2 address 3 802.11 frame R1 MAC addr AP MAC addr dest. address source address 802.3 frame 802.11 frame: addressing