When animal is failing the slapd_client_connect for both dn's (one for cn=config, one for the directory data), I see zoot accept the connection and then zoot sees animal drop it, and then five seconds later it connects successfully.
One of your servers started before the other one had finished coming up. Certainly no errors. Looks like everything is operating as designed.
--Quanah -- Quanah Gibson-Mount Sr. Member of Technical Staff Zimbra, Inc A Division of VMware, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration