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Copy %%PREFIX%%/etc/ldap.conf.dist to %%PREFIX%%/etc/ldap.conf, then edit
%%PREFIX%%/etc/ldap.conf in order to use this module.  Add a line similar to
the following to /etc/pam.conf on 4.X, or create an /etc/pam.d/ldap
on 5.X with a line similar to the following:

login	auth	sufficient	%%PREFIX%%/lib/pam_ldap.so
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