We recently made a new Red Hat server and it prompted us to enable this when we logged into SSH.

Was very pleasantly surprised, and we used the web interface to configure everything, from VMs to bridging and bonding. Everything just worked really well.

I'll admit though: it does feel a little "AJAX-ey" and it has this weird buggy/cheap feel that I don't get from i.e. Dell iDRAC or Enterprise switch interfaces. I think that is entirely because of the bootstrap-esque styling, and nothing to do with the way it works.