ldapsearch error - Unknown error (60)

To the members of the mailing list,

Upon a test search I'm getting the following error:

$ ldapsearch -LLL -v -z none -x -e "2.16.840.1.113730.3.4.9" -h bugsbunny.bar -p 9999 -b "ou=foo,o=bar" -D "uid=xxx,ou=foo,o=bar" -w "xxxxxxxx" "(&(objectClass=groupOfUniqueNames)(displayname=*))" displayname ldap_initialize( ldap://bugsbunny.bar:9999 ) filter: (&(objectClass=groupOfUniqueNames)(displayname=*)) requesting: displayname Unknown error (60) Additional information: VLV Control

When looking up the error I noticed the following:

LDAP_SORT_CONTROL_MISSING - 60 (x'3C) - Unused in standards. Sun LDAP Directory Server only. Server did not receive a required server-side sorting control.

Can someone that has experience with this type of LDAP search criteria assist me to obtain a final resolution?

Thanks to everyone, and regards, Auteria Winzer Jr.