rpcbind/rpc.umntall error on boot

[Robert Simmons]

I'm getting the following error on a new install with NFS:

kernel: Starting rpcbind.
kernel: NFS access cache time=60
kernel: rpc.umntall:
kernel: fileserver: MOUNTPROG: RPC: Program not registered
kernel:
kernel: rpc.umntall:
kernel: localhost: MOUNTPROG: RPC: Program not registered
kernel:
kernel: rpc.umntall:
kernel: fileserver: MOUNTPROG: RPC: Program not registered

My /etc/rc.conf contains the following:
nfs_server_enable="YES"
nfs_client_enable="YES"
rpcbind_enable="YES"

and /etc/exports is the following (for testing):
/storage -maproot=root 127.0.0.1

This problem does not seem to affect mounting or NFS functions.  What
is causing this error?