per-packet load sharing in cef or dcef

[Adam Atkinson]

per-packet load sharing in cef / dcef just doesn't seem to want to work.

I have two 7500s joined by a frame relay link and a fast ethernet.

Traffic is coming in to one of the 7500s via a third link, and goes
to a loopback on the second 7500.

I have cef turned on

I have "ip load-sharing per-packet" on every interface

The FR and FE have the same ospf cost

The routing tables and "sh ip cef" agree that there are
two equal paths to the loopback.

But all the traffic goes over one link.

I've been through Cisco troubleshooting documents etc. 
and as far as I can see, everything is perfect.

Also, a deja search reveals plenty of other people with
similar problems, and no solutions I can see. Are we all 
missing something obvious?

-- 
Adam Atkinson