Hello,

The LDAP schema have the following description for the field dhcpRange:
"The starting & ending IP Addresses in the range (inclusive), separated by a hyphen; if the range only contains one address, then just the address can be specified with no hyphen.  Each range is defined as a separate value."
But it appears that IP addresses should be separated by a space, and not a hyphen for isc-dhcp to understand them.
In your examples, spaces are used as well: https://source.isc.org/cgi-bin/gitweb.cgi?p=dhcp.git;a=blob;f=contrib/ldap/README.ldap;h=5e4691e84928f79790e6fbfbc977b4d6d105d666;hb=HEAD#l156

Côme