Committed to HEAD. Command-line clients now use DNS SRV to look up the host names related to a DN and build a list of URIs for subsequent use. To trigger, use -H "<proto>:///DN". The <host> portion must be empty, and a DN must be present. The DN must be in the "dc=<component>" form; it's turned into a domain and the host list is looked up using DNS SRV. After that, a list of URIs is built using the returned host/ports, and using <proto> as the LDAP scheme.