Network installation and jumpstart questions

Hello,
I'm trying to setup an automated installation of Solaris 10 within a certain subnet.

So far:

1. I can boot from the network using ISC-DHCP   (ok boot gem:dhcp - install)
   
2. I have a working JumpStart                              (rules, rules.ok, and a generic profile)
   
3. I think a have a working sysidcfg                    (although not yet configured with the initial root password)
   

But it still not working as expected because between steps 1 and 2 above I'm being brought to an interactive "System Identification" step I didn't expect.
So, what am I missing or doing wrong?

Here's something similar to my lab:

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[unwanted system identification (with reduced questions)]