The problem I have been facing is that I share a Slimserver on the WAN with some
friends. I have a Dynamic ip address and in order to use this Slimserver I had
to modify allowedHost in de pref file everytime my ip address changed. This
patch allows hostnames in the allowedHosts list.

@@ -1086,12 +1086,18 @@
 sub isAllowedHost {
        my $host = shift;
        my @rules = split /\,/, Slim::Utils::Prefs::get('allowedHosts');

        foreach my $item (@rules)
        {
+               # hack to allow hostnames in allowedHosts list
+               if(index ($item, "*") == -1){
+                       my $packed = gethostbyname($item) or return 0;
+                       $item = inet_ntoa($packed);
+               }
+
                if ($item eq $host)
                {
                #If the host matches a specific IP, return valid
                        return 1;
                } else {
                        my @matched = (0,0,0,0);