Configure the Login window Option and Select 

Show additional information in the menu bar

I was using Nomad for logins and I found the Host info had moved from the top right of the screen, to the bottom left of the Nomad login window. So try clicking in different places on the screen.

@Shyamsundar thanks for input, that settings is what I am using 

Thanks for input - I click on different places but no succes

IP in menubar is  great app we deploy on all our macs.

Monkeybread Software - Freeware - IP in menubar 4.7.1

We also have a plist they we deploy with it.

<dict> <key>DisplayText</key> <true/> <key>SmallFont</key> <true/> </dict> </plist>

and a start up item payload.

Thanks for your input, put the option (what is not working) gives not only the IP numer but also computername (sometimes handy here)

In macOS 15 Sequoia: click and drag from the clock.

Thanks, it seems to work, but you need to clock to cycle between IPnumber/ComputerName/System version but it works again.

"need to click on the clock"