+/* Router ID mixed into the flow hash to prevent network polarisation */
+extern u32 ip_flow_hash_router_id;
+
+int ip_flow_hash_set (ip_address_family_t af, u32 table_id,
+ flow_hash_config_t flow_hash_config);
+void ip_flow_hash_router_id_set (u32 router_id);
+