Purpose of the inner-eap module

Hi Folks, In the standard config there's an second instance of the eap module, named 'inner-eap', but it doesn't appear to be referenced anywhere. I've swapped all occurances of 'eap' in the inner-tunnel site to 'inner-eap' and now see PEAP/EAP-MSCHAPv2 authentications complete with one fewer roundtrip, which feels like an improvement. Is there a reason inner-eap is not used in the default inner-tunnel site? As an aside, the wiki's EAP module page says "NOTE: There can only be one instance of the EAP module." (http://wiki.freeradius.org/modules/Rlm_eap), but that doesn't appear to be the case here. Graham