IP addresses to which queries should be forwarded. Currently limited to a single address.
A list of domain names. The query must be covered by one of the domains in order for the rule action to apply.
Case-insensitive name of an endpoint, that is a sub-resource of the resolver, to use as the forwarding interface. The endpoint must have isForwarding set to true.
A list of CIDR blocks. The query must come from a client within one of the blocks in order for the rule action to apply.