make sure that the rio reciever's ip address can see the rest of your local network..

I had a problem when iptables was blocking my local network from my linux box - for some reason riplay/rrr both wanted to talk directly to the dhcp (or maybe jrecevier?) server...

iptables -t filter -A INPUT -d $LOCALNET -s $LOCALNET -j ACCEPT
fixed the problem for me..
-m