One virtual server for MS-chapv2 against Active Directory, the other one agaist ldap ntpasswd?

Hi All, Can I have one virtual server listening on 1812/1813 for authenticating with ms-chapv2 against AD, and then another virtual server listening on 1814/1815 authenticating with ms-chapv2 against LDAP with ntpassword hash? We are able to get a instance running for against AD, but not able to get it working against LDAP. The user will continue try the AD. Thanks, Shiling