Testing used modem before putting in service

[Filliam H. Muffman]

Microman wrote:
I logged into modem, and can see all of the screens and menus.

When I get this modem online, how do I tell if IPV6 is working?

It depends a little on which OS you are running on the Mac. The Mac will get an IPV6 address from the router and it will be displayed if you use the ifconfig command in the terminal.

macos-10-12-sierra-the-ars-technica-review/6/ [ arstechnica.com ]

Edit: maybe Onamuji will chime in if I mention his name...