ipAddrTable AIX doesn't have one?

There have been several posts to the effect of ipAddrTable not working
properly on AIX.  Is there any insite into this?
I am using OpenNMS to monitor all my systems except AIX due to this not
working.  My thought are that it might be a result of permissions (AIX not
allowing net-snmp permission to access ODM, etc...) Anyone else have any
ideas?  Or been able to get this to work on AIX?

The specific error I get is ³interface <ip address> has no valid ifIndex,
Assume this is a lame SNMP host with no ipAddrTable².  Also if I snmpwalk
this host I see not stats (so it is not that it is different it simply is
not there).

Thanks,

Alton