[Zope] zeo client tracking

Hello, We're using a zope 2.10 setup with a zeo server and several zeo clients behind lvs. Sometimes, we'd like to track which zeo client handled teh request, and we're going to need it as we'd like to proove that ha-proxy handles session persistance. Is there a way to add a header in the http response or the html code to do that ? Regards, -- Mikael Kermorgant