Previously, we periodically search suitable address for DHCP server, 1. when .network file is loaded, 2. when checking if we can configure sd_dhcp_server object, 3. when configuring sd_dhcp_server. Especially, the step 2 may be triggered several times. This makes, when .network file is loaded, find a corresponding Address object, add a new Address object if not found, then save the found or added Address object. So, it is not necessary to find address again on configuring sd_dhcp_server object.
System and Service Manager
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