Master- Options과 Zone 부분에 allow-transfer, also-notify 옵션 추가vi /etc/named.confoptions { listen-on port 53 { any; }; allow-query { any; }; allow-transfer { 192.168.1.2; }; // Slave 서버의 IP also-notify { 192.168.1.2; }; // Slave 서버의 IP notify yes;};zone "example.com" IN { type master; file "/var/named/example.com.zone"; allow-transfer { 192.168.1.2; }; also-notify { 192...