Disable RDR calling down to SRV on the same stack

I know I’ve seen it in this group somewhere, but a bunch of searching hasn’t
found it…

Can someone point me to the article which describes how to supress the
optimization which allows RDR to call down through to SRV on the same stack
when it is accessing a share on the same node. It’s really nice to be able
to debug both ends of the stack on the same machine but that optimization
short cuts out a lot of useful code.

Thanks

/Rod