package: libnss-ldap
version: 251-5.2
In one of the windows you provide example values "cn=manager,dc=example,dc=net".
Debian "slapd" by default installs DN "cn=admin,dc=example,dc=net". Can libnss-ldap provide stub "cn=admin..." as well?
The second part of the stub can also be guessed by looking at first line of /etc/resolv.conf (if any).
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Arieh