Hi dear Monks

I'm trying to learn 'complex'(for me) data structs. I never use more than a key/value hash.

Now I need something like :

%host {
   
  'ip1' => {
     'tcp' => {
        '21' => {
           'state' => open;
           'service' => ftp;
        },
        '80' => {
           'state' => open;
           'service' => web;
        }
      }
    }
  },
  
  'ip2' => {
     'tcp' => {
        '23' => {
           'state' => open;
           'service' => telnet;
        },
       '80' => {
           'state' => open;
           'service' => web;
        }
      }
    }
  }
};
[download]

I have read hash tutorials for two days, but have still no idea how to loop through this to print :

ip1
 21  open  ftp
 80  open  web
ip2
 23  open  telnet
 80  open  web
[download]

or how to add 53 open dns to ip1

Have a nice day