[#719] Reapplied patch

[#2764] Addressed review comments

[#2764] Added registering callbacks in allocators

The function is intended to run at the end of the server configuration.
It should iterate over the subnets and for each allocator register suitable
callbacks in the LeaseMgr. Currently, it is no-op.

[#2764] LeaseMgr callbacks per lease type

[#2764] Typos fix

[#2764] Preserve lease mgr callbacks on recreate

[#2764] Fixed placeholders conflict

[#2764] Added lease tracking to the backends

[#2764] Moved test functions to generic lease test

[#2764] Tracking lease manager

The new lease manager layer implements callback mechanism. The callbacks
can be registered and are invoked when the leases are modified.

[#2764] Hashing operator for IOAddress

To store the addresses in the unordered containers.

[#720] Implemented #2790 fix

[#720] Moved to compatibility flag

[#720] Regen lex and parser

[#720] Updated syntax

[#2765] Avoid confusion between options 60 and 124

[#2765] addressed review comments

[#2765] Cleanup last reviewer changes

[#2765] updated v6 unittests

Merge remote-tracking branch 'origin/1518-unable-to-add-multiple-sub-options-to-vivso-suboptions-20314bf68ded4cd7' into HEAD

[#2765] clone the vendor option and add extra unittests

[#2765] Fixed v4 and v6

[#1518] extended unittests for v6

[#1922] Removing not used dhcp6 STATUS codes

[#1922] Updating AUTHORS

[#1922] adding refs to RFCs for DHCPv6 Options

References added in comments according to:
https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml#dhcpv6-parameters-2

[#1922] adding references to RFCs for DHCP Options

References added in comments according to:
https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml#options

[#467] Rebasing bug

[#467] Commented vendor id sets

[#467] Addressed comments

[#467] Typo

[#467] Added a ChangeLog entry

[#467] Updated doc

[#467] Added unit tests

[#467] Updated appendRequestedOptions

[#467] Updated dhcpsrv code and tests

[#2743] Removed obsolete note

Have corrected the capitalization on the -Y/-y in the perfdhcp man page

[#2660] Fixed a comment

[#2660] Addressed review comments

src/bin/dhcp6/dhcp6_srv.cc
    Minor nits.

[#2660] Added ChangeLog

[#2660] Lease6::fromElement sets NA prefix length to 128

src/bin/dhcp6/dhcp6_srv.cc
    Dhcpv6Srv::processDhcp6Query() -
    Restrict prefix lenght test to PD leases

src/lib/dhcpsrv/lease.cc
    Lease6::fromElement(const data::ConstElementPtr& element) -
    set prefix lenght to 128 for non-PD leases

src/lib/dhcpsrv/tests/lease_unittest.cc
    Update fromElementNA test

[#2660] Avoid extraneous iaaddrs on v6 renew

Do not  use lease prefix when generating hints to
remove from context when renewing IA_NA leases.

src/bin/dhcp6/dhcp6_srv.cc
    Do not pass lease prefix length when creating
    hints to remove

src/lib/dhcpsrv/alloc_engine.h
    Default prefix length to 128 in
    AllocateEngine::Resource ctor

[#2739] Consistently calculate v6 lease lifetimes

Added a ChangeLog entry

src/lib/dhcpsrv/alloc_engine.cc
    AllocEngine::reuseExpiredLease(Lease6Ptr...)
    AllocEngine::extendLease6()
    - replaced explicit lifetime logic with call to getLifetimes6()

src/lib/dhcpsrv/tests/alloc_engine6_unittest.cc
    TEST_F(AllocEngine6Test, classReuseExpiredLease6)
    TEST_F(AllocEngine6Test, renewClassLeaseLifetime) - new tests

src/lib/dhcpsrv/tests/alloc_engine_utils.*
    AllocEngine6Test::simpleAlloc6Test() - now accepts option class defintion

[#2774] bump up version to 2.3.6-git

[#2769] editorial change log review

[#2769] release changes

[#2768] bump up library versions for 2.3.5 release

[#2704] fixed clang TSAN warnings by startong thread pools after setting up connections

[#2402] remove the regex check in statusGet UT

It caused failures on CentOS 7 and FreeBSDs 12 and 13.

unknown file: Failure
C++ exception with description "regex_error" thrown in the test body.
[  FAILED  ] CtrlChannelDhcpv4SrvTest.statusGet (3 ms)

[#2402] add ChangeLog entry

[#2402] fix a transient unit test failure

[#2402] document default MT

[#2402] adapt tests to MT enabled by default

[#2402] enable MT by default

[#2720] Added ChangeLog

[#2720] Changed EVAL_RESULT logger destination in dhcp4_srv.cc

src/bin/dhcp4/dhcp4_srv.cc
    Dhcpv4Srv::requiredClassify(Dhcpv4Exchange& ex) - changed
    logger destination

[#2742] add ChangeLog entry

[#2742] run no tests when gtest is disabled

What this provides is really the ability to run a testless distcheck.

[#2746] Aligned to This in new option descriptions

[#2746] Addressed comments

[#2746] Updated doc

[#2494] ChangeLog, AUTHORS updated

[#2494] correct JSON syntax in some configuration examples

[#2641] Corrected minor UT issues

src/lib/dhcpsrv/tests/alloc_engine4_unittest.cc
src/lib/dhcpsrv/tests/alloc_engine6_unittest.cc

Apply 2 suggestion(s) to 2 file(s)

[#2631] Credit added to ChangeLog

[#2631] Revised comment

src/lib/dhcpsrv/alloc_engine.cc

[#2631] Updated AUTHORS file

[#2631] Fixed ChangeLog typo

[#2631] Global reserved addresses must be feasible

kea-dhcp<4/6> both now enforce globally reserved addresses
to be within the selected subnet/shared-network

Added a ChangeLog entry

doc/sphinx/arm/dhcp4-srv.rst
doc/sphinx/arm/dhcp6-srv.rst
    Updated global reservation commmentary

src/lib/dhcpsrv/alloc_engine.cc
    AllocEngine::allocateGlobalReservedLeases6() - modified to enforce
    address feasibility/subnet reselect

    AllocEngine::labelNetworkOrSubnet() - new convenience method for logging

    hasAddressReservation() - modified to enforce
    address feasibility/subnet reselect

src/lib/dhcpsrv/alloc_engine_messages.mes
    New log messages:
    ALLOC_ENGINE_IGNORING_UNSUITABLE_GLOBAL_ADDRESS
    ALLOC_ENGINE_IGNORING_UNSUITABLE_GLOBAL_ADDRESS6

src/lib/dhcpsrv/tests/alloc_engine4_unittest.cc
src/lib/dhcpsrv/tests/alloc_engine6_unittest.cc
src/lib/dhcpsrv/tests/alloc_engine_utils.*
src/bin/dhcp4/tests/host_unittest.cc
src/bin/dhcp6/tests/host_unittest.cc
    New and updated tests

[#2723] Note about multiple tokens

[#2664] updated classify ARM example

[#2702] remove reference to config_report

[#2702] moved cfgrpt inside process folder

[#2702] removed link dependencies to fix odr violation

[#2677] addressed review

[#2677] Fixed ChangeLog

[#2677] Ignore invalid renew-timer values

src/lib/dhcpsrv/dhcpsrv_messages.*
    DHCPSRV_CFGMGR_RENEW_GTR_REBIND - new message

src/lib/dhcpsrv/network.h
    Added Network::getLabel()

src/lib/dhcpsrv/parsers/base_network_parser.cc
    BaseNetworkParser::parseCommon() - log renew > rebind
    rather than throw

src/lib/dhcpsrv/parsers/dhcp_parsers.cc
    Subnet4ConfigParser::initSubnet() - removed duplicate timer check
    Subnet6ConfigParser::initSubnet() - removed duplicate timer check

src/lib/dhcpsrv/shared_network.h
    Added SharedNetwork4::getLabel()
    Added SharedNetwork6::getLabel()

src/lib/dhcpsrv/subnet.h
    Added Subnet::getLabel()

src/lib/dhcpsrv/tests/cfg_subnets4_unittest.cc
    TEST_F(Subnet4ParserTest, parseWithInvalidRenewRebind) - new test

src/lib/dhcpsrv/tests/cfg_subnets6_unittest.cc
    TEST_F(Subnet4ParserTest, parseWithInvalidRenewRebind) - new test

src/lib/dhcpsrv/tests/shared_network_parser_unittest.cc
    Updated tests

[#2702] remove link dependencies to fix ODR

[#2702] remove linked libs to avoid odr violation

[#2702] fixed compilation warning

[#2702] added more missing link dependencies

[#2702] Fixed libprocess

[#2702] fixed link order

[#2702] addressed review comments

[#2702] applied suggested patch

[#2702] fixed unittests

[#2702] fixed memory leaks

[#2702] fix static linking with libcfgrpt.la multiple times

[#2538] Fix UTs

Restored detection in encapsulateInternal() to avoid
throws in UTs

modified:
    src/lib/dhcpsrv/cfg_option.cc
    src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc

[#2538] Addressed more comments

src/lib/dhcp/option.cc
    Removed dead line

src/lib/dhcpsrv/tests/host_reservation_parser_unittest.cc
    Removed unneeded include

[#2538] Addressed review comments

src/lib/dhcp/option.cc
    Option::addOption(OptionPtr opt) - now throws rather than
    silently ignoring attempted self-adds

src/lib/dhcp/tests/option_unittest.cc
    TEST_F(OptionTest, optionsCannotContainThemselves) - new test

src/lib/dhcpsrv/cfg_option.cc
    CfgOption::encapsulateInternal(const OptionPtr& option) - removed
    self-add check, relies on Option::addOption() to detect

src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
    TEST_F(ParseConfigTest, selfEncapsulationTest) - altered to expect
    throw

src/lib/dhcpsrv/tests/host_reservation_parser_unittest.cc
    TEST_F(HostReservationParserTest, selfEncapsulation) - deleted test

[#2538] Avoid adding options to themselves

src/lib/dhcp/option.cc
    Option::addOption(OptionPtr opt) - added sanity check
    to avoid options being added to themselves as Option::addOption()
    is called all over the place.

src/lib/dhcpsrv/cfg_option.cc
    CfgOption::encapsulateInternal(const OptionPtr& option) - added
    sanity check to avoid adding options to themselves. Not strictly
    necessary but more better then relying on lower level defenses.

src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
    TEST_F(ParseConfigTest, selfEncapsulationTest) - new test

src/lib/dhcpsrv/tests/host_reservation_parser_unittest.cc
    TEST_F(HostReservationParserTest, selfEncapsulation) - new test

[#2734] Regenerated db_messages

[#2734] Code cleanup

Edits in the log message definition and the whitespace removal.

[#2734] Added ChangeLog entry for #2734

[#2734] Eliminate duplicated warnings

[#2734] tcp_user_timeout for PostgreSQL 12+

Added conditional compilation to set tcp_user_timeout parameter for the
PostgreSQL 12 or later. Log a warning for earlier PostgreSQL versions.

[#2575] added ChangeLog entry