excluded prefix length should be higher in value (smaller in address space)

Described the use of ip-reservations-unique global parameter. In addition,
the corresponding DHCPv4 section was slightly updated.

Added a section to the DHCPv4 host reservations section which describes
how to enable using multiple reservations for the same IP address.

Thomas Markwalder authored Oct 08, 2020 and Francis Dupont committed Oct 09, 2020

    (Parsers need to be regenerated)

    src/bin/dhcp6/dhcp6_lexer.ll
    src/bin/dhcp6/dhcp6_parser.yy
    src/bin/dhcp6/json_config_parser.cc
        added ddns-update-on-renew parameter

    src/bin/dhcp6/dhcp6_srv.*
        Dhcpv4Srv::createNameChangeRequests() - modified to
        use ddns-update-on-renew in logic

    src/bin/dhcp6/tests/fqdn_unittest.cc
        TEST_F(FqdnDhcpv6SrvTest, processRequestRenew) - new test

    src/bin/dhcp6/tests/get_config_unittest.cc
        Updated

    doc/examples/kea4/all-keys.json
    doc/examples/kea6/all-keys.json
        added ddns-update-on-renew parameter

Thomas Markwalder authored Oct 06, 2020 and Francis Dupont committed Oct 09, 2020

(Parsers need to be regenerated)

src/bin/dhcp4/dhcp4_lexer.ll
src/bin/dhcp4/dhcp4_parser.yy
src/bin/dhcp4/json_config_parser.cc
    added ddns-update-on-renew parameter

src/bin/dhcp4/dhcp4_srv.*
    Dhcpv4Srv::createNameChangeRequests() - added DdnsParams
    argument and modified to use ddns-update-on-renew in logic

src/bin/dhcp4/tests/fqdn_unittest.cc
    TEST_F(NameDhcpv4SrvTest, createNameChangeRequestsUpdateOnRenew)
    - new test

src/bin/dhcp4/tests/get_config_unittest.cc
    Updated

src/lib/dhcpsrv/network.*
src/lib/dhcpsrv/parsers/base_network_parser.cc
src/lib/dhcpsrv/parsers/simple_parser4.cc
src/lib/dhcpsrv/parsers/simple_parser6.cc
src/lib/dhcpsrv/srv_config.*
    Added ddns-update-on-renew

src/lib/dhcpsrv/tests/dhcp_parsers_unittest.cc
src/lib/dhcpsrv/tests/network_unittest.cc
src/lib/dhcpsrv/tests/shared_network_parser_unittest.cc
src/lib/dhcpsrv/tests/shared_network_unittest.cc
src/lib/dhcpsrv/tests/srv_config_unittest.cc
src/lib/dhcpsrv/tests/subnet_unittest.cc
    updated tests