I've had this problem

It's a ISC DHCP thing.

Check your Managed subnets.  Look at the address you've assigned there.

Check your DHCP subnets.  Did you hand out the IP address there as well?
You can't use an address twice.  Earlier versions, the DHCP generating
code wasn't checking for this.  I think this has been caught in later
versions, and won't let you auto-generate that way.

Really weird, took a TAC call to figure this one out. 

> -----Original Message-----
> From: Perfigo SecureSmart and CleanMachines Discussion List 
> [mailto:[log in to unmask]] On Behalf Of Cal Frye
> Sent: Monday, February 06, 2006 9:12 AM
> To: [log in to unmask]
> Subject: DHCP data not all there
> 
> We're now using our CAS servers for all DHCP on campus. 
> There's a small but persistent number of systems, including 
> some that should be clean and well-behaved, that can't seem 
> to obtain their default gateway information. The IP address 
> and the subnet mask come down, but the gateway data remains blank.
> Any of you see similar issues?
> 
> CCA version 3.5.4, mostly not using CCAAgent yet, DHCP pool 
> using /30 or /29 subnets. I kind of lost my update window 
> waiting for the confusion about version 3.6.0 to die down...
> 
> --
> --Cal Frye, Network Administrator, Oberlin College
>    www.calfrye.com, www.pitalabs.com, www.ouuf.org
> 
>   "The direct use of force is such a poor solution to any 
> problem, it is generally employed only by small children and 
> large nations." -- David Freidman.
>