1432. [func] MayyaSunil Code added to handle Authentication option in DHCPv6. There is no way to use this code yet. (Github #93, git 022dae4393da9e714678d52886d4f478ba308ba9)
1430. [func] fdupont Lease objects and lease backends are now able to store user context. User context can store an arbitrary data as long as it is in JSON format. Database schemas updated.
1429. [bug] marcin Removed memory leak in the DHCPv4 and DHCPv6 servers which occurred when hooks libraries where loaded. (Trac #5664, git 2584b902d2617089bfa7238133490ddd855aa77a)
1428. [bug] marcin Corrected behavior of the standby server in the HA hot-standby mode, which failed to monitor delays in responses to the DHCP queries sent to the primary server after the primary server became unavailable. This resulted in transition of the standby server to the partner-down state immediately after detecting interruption in communication with the primary over the control channel. (Trac #5654, git 7a83f05fe40fb1b6812b055e2d6d633d9e00160c)
1427. [bug] marcin Resolved multiple problems causing slow synchronization of leases in the HA hooks library, including adjusting timeouts in control channel and improving performance of responses sent by the Command Manager to Control Agent. Also, introduced 'sync-timeout' configuration parameter into HA hooks library to control lease database synchronization timeout. (Trac #5649, git cbc29128863916a13364749bf681586aea2aa51e)
1426. [func] fdupont Added KNOWN and UNKNOWN built-in client classes: after host lookup if a matching host entry is found the incoming packet is added to the KNOWN class, if none is found to the UNKNOWN class. Then expressions depending directly or indirectly on these classes are evaluated. Note these classes may be used to select a pool but they may not to select a subnet.
1425. [bug] marcin Improved performance of the DHCP server running in High Availability configuration by optimizing the management of CalloutHandle objects passed to the callouts. (Trac #5647, git eea88d5c8f4d8efb6c5bfdfbf4e070a90069db5d)
1424. [doc] marcin List of hooks libraries provided by ISC includes an information which Kea servers the libraries can be attached to. The detailed description of each supported hooks library also contains this information. (Trac #5613, git 9d6f8de3d988c42c413a7d628e31854e9c80d8c9)
1423. [bug] tmark kea-dhcp4 and kea-dhcp6 now retain and emit global, scalar parameters specified in their configuration. (Trac #5378, git 4d05122f03d00b10a888c768fe1725cae9d6aea6)
1421. [build] marcin Moved libdhcp_ha (High Availability) hooks library from premium to main Kea repository and changed its license to MPLv2.0. Future ChangeLog entries for this library will be tracked in the Kea ChangeLog file. (Trac #5645, git 19b2553d4869bdd52b63b6f7969052d8a724f78d)
1420. [doc] marcin Updated list of loggers in the Kea Administrator's Manual. The updated list contains all loggers, including those from supported hooks libraries. (Trac #5622, git bd94afc0af7183452c94f3b5768c6138f79d3b60)
1419. [doc] marcin Documented "sync-leases" configuration parameter of the HA hooks library in the Kea Administrator's Manual. (Trac #5621, git 4ebac3a411aa02d1cc3d74e7eaf3212ad208159a)
1418. [bug] marcin Corrected bug in the allocation engine which caused occasional lease allocation failures when a loaded hooks library set the callout status to non default value, e.g. "skip" rather than "continue". In such cases, the server reported that it failed to allocate a lease "after 0 attempts". (Trac #5638, git f2e9b686ae52e1b06f660e1b522588b1440e2620)
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 to the client was changed to: send rebind-timer only when it is less than the lease lifetime; and send renew-timer only when it less than either the rebind-timer if specified, or lease lifetime in the absence of rebind-timer. (Trac #5596, git 38426e16ec04a786e35a65d27cbcb7dbabfe79b5)
1413. [func] fdupont Removed getAll, get4 and get6 methods using both hardware address and DUID from host backend (aka host data source) APIs. This is an *incompatible* change.
1412. [func]* marcin The client classes used by the High Availability hook library use upper case "HA_" prefix and they are now built-in classes. This means that those classes do not need to be declared in the server configuration. (Trac #5632, git 2d590bfd7d1b0eca377eb99eef83a3083a1d7399)
1409. [doc] marcin Documented in the User's Guide how Kea HA service behaves when the clock skew between active servers becomes too high. (Trac #5603, git ffaff4d2a03600bb4f81d335b49a840e31d03c8c)
1408. [func] tomek perfdhcp now supports -o option that adds DHCP options. This may be used to simulate various clients. (github #77, git b81dedb7f0a2516130e7bd799d9084c63f0e844c)
1407. [bug] tmark Corrected an issue where the destruction of loggers prior to the destruction of the TimerMgr singleton caused unit tests to segfault. (Trac #5626, git 9f4e3f9cd8acf8e7d1d3e714d8f904754377c00f)
