How not allow setting ip changes interface down status?

[h bagade]

Hi all,

I want to know if there is any way to change the current freebsd behavior
when setting interface ip address. In current method, when assigning ip
address to an interface, the interface is set to UP. I need not allowing
this change to be done! If an interface is in down state, setting ip
address doesn't change its sate.

I'm ready to hear your ideas on my question and what's the pros and cons of
the change I'm going to make.