the ip command as replaced pretty much all stuff (actually around 10 years ago!) but once you get use it it is much nicer. There's a quick start here http://andys.org.uk/bits/2010/02/24/iproute2-life-after-ifconfig/ or you can do "yum install net-tools" and get the old ones back.
Whow, I have been asleep at the switch on this one. Did not see it in any notes, but then that is more than likely my fault. So I got a lot of reading to do, and then figure out why no IP addresses (v4 or v6) are getting assigned. I figure out enough of the IP command to see no addresses. Even if there is a problem with my DHCP server, I am sending out RA messages, so there should be a global IP address. I will dig a bit and see if I can get addressing to come up properly.
Of course with no addressing, the address I *THOUGHT* this box took was actually another test box that has SSH on another port, of course ssh was not connecting. 'firewall-cmd --list-all-zones' shows that the ssh service is allowed in; no change to default setups there.
ANd I cannot install net-tools until I get addressing working.
The other useful command is nmcli which is the NetworkManager command line. You could also try a plain old "ifup eth0" and see if that makes a difference.
Peter