// we are server1 // key generated from; // dnssec-keygen -a hmac-md5 -b 512 -n HOST bindkey key server1-server2.example.tld. { algorithm hmac-md5; secret ""; }; // set the keys for server2 server 1.1.1.1 { keys { server1-server2.example.tld.; }; }; server 2001:1:1::1 { keys { server1-server2.example.tld.; }; };