Kea 1.4.0-P1, July 11 2018, Release Notes Welcome to the 1.4.0-P1 release of Kea (base version 1.4.0, patchlevel 1). This security patch release of Kea does not introduce any new features; it addresses a memory leak discovered in Kea 1.4.0 that is related to incorrect memory management when passing query4 and query6 parameters to the installed Hook libraries. Users are strongly encouraged to upgrade from 1.4.0 unless they are not planning to use hooks. Users are reminded that hook libraries must be recompiled when upgrading from any earlier versions, including 1.4.0. Kea is a DHCP implementation developed by Internet Systems Consortium, Inc. that features fully functional DHCPv4 and DHCPv6 servers, a dynamic DNS update daemon, a Control Agent (CA) that provides a REST API to control the DHCP servers, an example shell client to connect to the CA and a DHCP performance measurement tool. Both DHCP servers fully support server discovery, address assignment, renewal, rebinding, release, decline, information request, DNS updates, client classification and host reservations. The DHCPv6 server also supports prefix delegation. Lease information can be stored in a MySQL, PostgreSQL or Cassandra database; it can also be stored in a CSV file. Host reservations can be stored in a configuration file; they can also be stored in a MySQL, PostgreSQL, Cassandra databases and to some degree also retrieved from a RADIUS server.