On Wed, 23 Mar 2011, Brian P Kroth wrote:
In the default configuration mod_authnz_ldap.load is symlinked from mods-available to mods-enabled but that orders it (lexicographically) after the symlink to load mod_authnz_default. This causes a number of ldap specific arguments to the Require definition to be unrecognized and logged as follows:[Wed Mar 23 11:04:48 2011] [error] [client 10.10.10.10] access to /auth failed, reason: unknown require directive:"ldap-user bpktest bpkroth"
This message is not produced by apache2's core or any of the default modules. Therefore I expect that the bug is in a third party module. To find out which module may be the culprit, enter as root:
grep require: $(cat /proc/XXX/maps |fgrep .so|awk '{print $6}'|sort -u)
Replace XXX with the pid of a running apache process.