Okay, it was it's the e-smith that wasn't well adjusted.... 
@stephdl @filippo_carletti, I successful change the nic configuration.
When I do db networks show, I've got now the correct configuration.
From a shell box, on the Mac, I successfully ping the VM.
From the VM, I ping the Mac address.
But from the browser, I don't access the webgui 
What do you suggest to adjust?
Edit: when I do # config show dns
It show a wrong dns server, so it not make a proper dns subscription.
It's the dns to fix... How to?
Why the https://ip_addr:980 don't open the webgui?