Using update 4 of Solaris 10, I can enter "123.123.123.123" with no problem. I too would like to know which version of Solaris has a problem.
Code:
─ IP Address for e1000g0 ───────────────────────────────────────────────────────
Enter the Internet Protocol (IP) address for this network interface. It
must be unique and follow your site's address conventions, or a
system/network failure could result.
IP addresses contain four sets of numbers separated by periods (for example
129.200.9.1).
IP address for e1000g0 123.123.123.123
> Press F2 to go to the next screen.
Edit: Also which interface? As you can see, I am using the serial port interface, not the x-based gui interface.