[glue-wg] Service discovery use case

Hi, This is a bug from last year about the use of GlueService with myproxy: https://savannah.cern.ch/bugs/?func=detailitem&item_id=17414 which raises the question of exactly what the access control information is telling you. The use case here is to be able to discover myproxy servers according to who/what is allowed to retrieve/renew proxies from them. The underlying question is to what extent the access control information can be service-dependent. Stephen