+1415. [bug] tmark
+ kea-dhcp4 and kea-dhcp6 now validate the schema version
+ of lease and host back ends after establishing a connection.
+ If a schema version does not match the version the server
+ expects, the server will emit an error log and close
+ the connection. This applies to MySQL, PostgreSQL, and Cassandra.
+ (Trac #5629, git 15c34afdba45be609e35284a209ad18ed66605f8)
+
1414. [bug] tmark
kea-dhcp4 parsing now treats renew-timer and rebind-timer
as optional with no defaults. The logic for sending them