syntax question for "access to"

[charlie derr <cderr@simons-rock.edu>]

In my slapd.conf I would like to restrict access ('write' in this case) 
to two anded clauses.  I haven't been able to find anything yet in the 
documentation that explains the syntax for this, but I seem to remember 
an example on this list from some months ago that leads me to believe 
that this is possible.  

Specifically, I want to grant write permission to myAttribute if and 
only if the person has bound as self *and* that person is coming from a 
specific ip.   Here's my attempt at pseudo-coding it (almost certainly 
wrong):

access to attribute=myAttribute
       by [peername="ip=123.45.67.89:*"] and [self] write
       by * read
       by anonymous none


Can someone please tell me the correct syntax (and where it's documented 
if I missed it), or tell me that i'm misremembering and that this isn't 
an option.    I'm using openldap 2.0.23

   thanks very much in advance,
       ~c