Dear Rene/Andrew,
Thank you for this great lesson. Mr Andrew with reference to your reply # 27608 above particularly this point " Additionally, you may notice that all communication from the DHCP server at layer 2 is unicast. The reason for this is because the DHCP server obtained the client’s MAC address when the client sent out its initial Discover message.", I am still confused on where broadcast happens and where unicast happens. From the Wireshark captures above I do not see Unicast happening anywhere. Even for Offer and Ack from the server the dest mac address seems to broadcast instead of unicast to the end device.
Could you please clarify on this. Thank you very much.