[lemma=of] [tag=DT] [□] □
[lemma=of] [tag=DT] [□=□] □
[lemma=of] [tag=DT] [□ & □] □
Note : The use of parts of the console operating system 's IP address as part of the MAC address is an attempt to generate MAC addresses that are unique across different ESX Server machines . It is good practice to keep a record of the MAC addresses that belong to particular pieces of hardware to assist in tracing network packets to their source .