I've been trying to use the following option in dhcpd.conf: ldap-tls-crlfile
...but apparently GnuTLS is not supported by the patch, meaning these openssl options must be used instead: ldap-tls-crlcheck ldap-tls-ca-dir There doesn't seem to be anywhere to specify the location of the CRL. There is a "crl dist point" option that can be specified in the certool CA template, so perhaps this is what must be used: crl_dist_points = "http://www.example.com/getcrl/" None of this has helped as I'm still getting the same error as previously: dhcpd self-test failed. Please fix /etc/dhcp/dhcpd.conf. The error was: Internet Systems Consortium DHCP Server 4.2.4 Copyright 2004-2012 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Cannot set LDAP TLS crl check option: Can't contact LDAP server *** glibc detected *** /usr/sbin/dhcpd: double free or corruption (top): 0x00007f6b054e6300 *** -- Mark Pavlichuk -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org