Error loading open interface with ipmitool

[Zack Brown <zrbrown%iastate.edu@localhost>]

I'm trying to set up IPMI on NetBSD 5.99.24 amd64 on a Dell PowerEdge R210.
I installed ipmitool from pkgsrc, but the open interface isn't working.

For example,

# ipmitool -I open
Error loading interface open

I've successfully installed and used IPMI on RHEL5 using the same machine,
so it must be something involving NetBSD.  Any ideas on why this isn't
working?

Thanks,
Zack Brown