rndc connection to remote host closed

确保/etc/rndc.conf:
options {
        default-server localhost;
        default-key     "rndckey";
}; server localhost {
        key     "rndckey";
}; key "rndckey" {
        algorithm       hmac-md5;
        secret "nqa1jG7gm6Vy23SclcqDfjNHkSyNg4NQigJ3JshAf89DT7jv7NpP0wDT7Tqp";
}; /etc/rndc.key:
key "rndckey" {
        algorithm       hmac-md5;
        secret "nqa1jG7gm6Vy23SclcqDfjNHkSyNg4NQigJ3JshAf89DT7jv7NpP0wDT7Tqp";
};
关键是key要相同，还有MD5也要相同   rndc-confgen > /etc/rndc.key