rndc: unsupported algorithm:

[Markus Feldmann]

I changed my key to

key feld-server.feldland.lan. {
	algorithm hmac-md5;
	secret TNCrihQV8NjY6bzA5GMJIg==;
};


and executed the command

feld-server:/etc/bind# rndc -s feld-server -k rndc.key reload
rndc: connect failed: 192.168.0.186#953: connection refused


Without the explicit -s argument he doesn't find the DNS-Server... ??? 
However it seems that i have a Problem with some of my statements in 
/etc/bind/named.conf.options

controls {inet 127.0.0.1 port 953 allow { localhost; } keys { 
feld-server.feldland.lan.; }; };

What to do? I executed rndc in the server.

regards Markus