Dscl error with auth: Data source (/LDAPv3/myod.mydomain.ch) is not valid

Hello, I'm trying to use DSCL from a remote client to an OpenDirectory server. The client and the server are in Leopard 10.5.8 I binded the client to the OD using the Apple Directory Utility. When I try: [code]dscl /LDAPv3/myod.mydomain.ch -read /Users/a_shortname [/code] everything goes well, I got back all data for the record. But if I try to add some authentification for, let say, a create: [code]dscl -p -u diradmin /LDAPv3/myod.mydomain.ch -create /Users/another_shortname [/code] I'm prompted for the password and then: [code]Data source (/LDAPv3/myod.mydomain.ch) is not valid.[/code] I tried to build up a "myod2.test-domain.ch" with a similar configuration as the production server and everything goes well with the test server. Does someone has an idea about what I'm missing in the process ? What could make the [i]dscl[/i] find the datasource only without authentification stuffes ? Thanks for any answer.