Aggregate Authenticator LDAP multiple directories

[Peter Schober]

* Ioannis Kakavas <ikakavas at noc.grnet.gr> [2015-07-15 10:01]:
> The error is
> 2015-07-14 23:30:19,054 - WARN
> [net.shibboleth.idp.authn.impl.ValidateUsernamePasswordAgainstLDAP:212]
> - Profile Action ValidateUsernamePasswordAgainstLDAP: Login by
> myusername produced exception
> org.ldaptive.LdapException: Found more than (1) DN for: myusername

Note that that's not an error, it's a WARN-level message.
I.e., processing should continue. What's the observed behaviour?

Note that http://www.ldaptive.org/docs/guide/authentication mentions a
property called "allowMultipleDns (whether to throw an exception if
multiple entries are found with the search filter)" but since no
exception is thrown here it doesn't look like it's needed?
-peter