Configure SP (IIS 6) with mutiple web sites

[Jonathan]

I was trying to configure my test SP on IIS 6.0 for multiple websites.

In shibboleth2.xml I set

<InProcess logger="native.logger">
        <ISAPI normalizeRequest="true" safeHeaderNames="true">
                       
            <Site id="87257621" name="site1" />
            <Site id="223085047" name="site2" />
           
        </ISAPI>
    </InProcess>
.
.
.
<RequestMapper type="Native">
        <RequestMap applicationId="default">
       
<Host name="site1" authType="shibboleth" requireSession="true" redirectToSSL="443" />
<Host name="site2" authType="shibboleth" requireSession="true" redirectToSSL="443" />       
         
        </RequestMap>
    </RequestMapper>

After I bounced IIS, the SP only protects site1 but not site2.  

What do I miss?