Route policies are created in the config>router context. There are no default route policies. Each route policy must be explicitly created and applied.
A route policy impacts the flow of packets within and through the router.
Route policies can be created to control filter IGMP membership reports from specific hosts or specific multicast groups.
Before a route policy is applied, analyze the policy purpose and be aware of the results (and consequences) when packets match the specified criteria and the associated actions and default actions, if specified, are executed. Membership reports can be filtered based on a specific source address.