[rrg] Remote ACLs [Proposals which match rrg architectures.htmlpls check the page]

[Xu Xiaohu]

> 
> |The simple/short answer is because they are being used as IDs.
> 
> 
> And this is an architectural bug that we should endeavour to 
> fix, not propagate.
 
If we want to use ID in the ACL, should it also have some structure in
semantics? since the flat ID will cause a scaling issue with ACL and a huge
burden for manually configuration.

Xiaohu