Lately I’ve been thinking about replacing my ESXi setup I have at OVH with a SmartOS one. I got a cheap kimsufi server for one month to play around. As you know those do not have multiple IP’s/NIC’s.
I wrote a little dirty how to on how to setup NAT in the global zone and use port forwarding to expose services from zones.
You can read about it here: https://docu.blackdot.be/snipets/solaris/smartos-nat
Edit: some already asked me on how secure this is, well not very since the displays (vnc) spawned by SmartOS are not encrypted. I updated the wiki to only allow ICMP + SSH by default now.
Using a single IP+NAT is definitely not the best way to do it, but it does work.