[Dovecot] doveadm director proxy

I'm trying to configure a doveadm service that will proxy trough our directors, following the recipie at:

http://wiki2.dovecot.org/Director#Doveadm_server

So on the backends I have:

service doveadm {
	inet_listener {
			port = 24245
			address = *
	}
}
doveadm_proxy_port = 24245
local 192.168.42.0/24 {
	doveadm_password = suPerSeecret
}

I assume the "local" line is supposed to point at my local network..?

On the directors I have the same, plus:

protocol doveadm {
	auth_socket_path = director-userdb
}

When testing "doveadm quota" on the directors, it complained quota plugin not being loaded, so I added:

mail_plugins=quota

Then it complained about "doveadm_password not set, can't authenticate", so I added:

doveadm_password = suPerSeecret

in the main section. Now I get trough to my backend servers, but they complain about:

dovecot::  doveadm: Error: doveadm client attempted non-PLAIN authentication

Any ideas for what that might be? This is with dovecot v2.0.14.

-jf