[ixp1200] IXP1200 - Replicating microblocks across microengines

Can anyone provide me with any information about replicating microblocks across multiple microengines on the IXP1200, either at start up or during execution? The SDK seems to prevent loading copies of a microcode file onto multiple microengines at startup, and ix_res_open is not calling its callback when I try to open a channel to the resolver in order to create a new microace at runtime. Thanks, John Woodfin