Complete procedures with a way back.

Deploy two supported Kea 3.0 LTS DHCPv4 peers in hot-standby mode with identical subnet policy, durable independent lease stores, fixed-address reservations, peer-only native HA listeners, automatic takeover guarded against split brain, and a controlled lease resynchronization path.

Build an authorized two-server DHCPv4 service with reviewed IPAM, inactive-first scope creation, internal DNS options, shared secure updates, reservations, load-balanced failover, relay and maintenance tests, and isolated recovery.