Primary and secondary: NOTIFY, AXFR/IXFR and TSIG-signed transfers

1 h Debian 12 Versions BIND 9.16, BIND 9.18, BIND 9.20

Objective

Give masterlinux.lab a second server (ml-dns-02, 10.20.0.54) that receives each change within seconds, without ever offering the zone to a stranger, and learn how to repair a stuck replication.

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