Should fix 2 tests test_reservation_mode_in_globals[v4-(mysql|postgresql)].
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f9a30f0a improve error message -
60ac9d56 use in-subnet reservations in test_reservation_mode_in_globals According to https://kea.readthedocs.io/en/kea-2.3.5/arm/dhcp4-srv.html#global-reservations-in-dhcpv4:
An address assigned via global host reservation must be feasible for the subnet the server selects for the client. In other words, the address must lie within the subnet otherwise it will be ignored and the server will attempt to dynamically allocate an address. In the event the selected subnet belongs to a shared-network the server will check for feasibility against the subnet's siblings, selecting the first in-range subnet. If no such subnet exists, the server will fallback to dynamically allocating the address.