I think you've hit the same problem that I started this thread about on 20-04-2016 so join the club!
Solaris x86 11.3 'live' DVD, network issue
I never got an answer to this and I haven't been able to solve it myself.
Do you think that it's the same problem?
I put the thread up in the hope that some big Solaris guns who are members on here (and who are Oracle employees) would push this inside Oracle but, so far, no luck.
So what I'm saying is that I don't think this problem is as a result of something you've done. I still say that it's a bug.
---------- Post updated at 07:29 PM ---------- Previous update was at 06:53 PM ----------
Additional comment:
The obvious conclusion to draw is that the required network interface driver is not available (ie, not on the media) but if that were the case, how come the network interface always works fine when running from the 'live' DVD but won't start the network after installation and booting from the HD. I still don't get it I'm afraid. Just doesn't make sense. Even then, the problem occurs randomly and is not consistent on every boot. Sometimes it works just fine and seems to be something to do with a DHCP server (or router) going away (rebooting) and then coming back. Subsequent boots fail to start the network for some reason and screw the OS.
If you install Solaris 11.1 x86 and then do an over-the-web upgrade to Solaris 11.3 this problem never occurs. Weird.