I do not understand what they mean with ethernet address, when there are 4 ethernet ports on the device (AirPort Time Capsule). WAN is AFAIK a well established term, Apple is using it in its manuals, and therefore the utility should use that too. Everything else is confusing and wasting our time.
Just so you know.. there is no distinction on the airport between WAN and LAN ports.
All are using the same MAC address. Apple does not use a separate connection to the processor but a single switch chip.. which actually might cause some of the issues they experience. Since there is nothing to define MAC difference WAN to LAN.
So 6.3.1 utility
LAN address.
From Terminal using arp -a command
? (192.168.2.55) at 70:56:81:c5:86:c7 on en1 ifscope [ethernet]
? (192.168.2.55) at 70:56:81:c5:86:c7 on en0 ifscope [ethernet]
WAN address
From the Router Stats page that it is plugged into.
3 | 192.168.2.55 | 70:56:81:C5:86:C7 | TCGEN4 |
The old utility 5.6 shows the same level of information.
Apple engineers are unlikely to read your comments.. post your comments direct to apple.
https://www.apple.com/au/contact/feedback.html
The manuals have been seriously out of date for some time.. and I suspect the Engineers are not writing them.. !! Manuals by Engineers tend to be readable only by other Engineers.