[nsp] OSPF legal on Etherchannel subinterfaces?

[Pete Templin]

Greetings,

I'm experimenting with Etherchannel subinterfaces, and finding that I 
can't get OSPF to develop adjacencies.  Is this legal?  I see one side 
complaining about bad length:

Apr  2 07:32:35 10.118.28.34 209: Apr  2 07:32:34.129 Central: 
%OSPF-4-BADLENGTH: Invalid length 52 in OSPF packet from 10.118.28.101 
(ID 10.118.28.37), Port-channel2.1

Platform is 2xPA-FE-TX on separate VIP2-50 in 7507, talking to another 
identical platform through a Cat 6509.

Thanks for any assistance,

Pete