[Buildroot] udhcpc when link is up

[Charles Krinke]

I have another noob question concerning dhcp this time.

I observer with our MPC8323 system that if the system is booted with
the network cable disconnected and after boot the cable is connected,
I get the proper "Link is Up" message, but dhcp does not request a
lease.

If I run "udhcpc", the network is then setup properly, but I would
like "Link is Up:" to trigger udhcpc. I do not see a script in
/etc/udhcpc/default.script.

Can someone point this "noob for the day" in an appropriate direction
to understand how to cause "Link is Up" to properly obtain a lease,
please?

-- 
Charles Krinke