- * Routing control calls allow a routing daemon
- * to consistenly access the routing data base for updates.
+ * Force a routing table entry to the specified
+ * destination to go through the given gateway.
+ * Normally called as a result of a routing redirect
+ * message from the network layer.
+ *
+ * N.B.: must be called at splnet or higher
+ *
+ * Should notify all parties with a reference to
+ * the route that it's changed (so, for instance,
+ * round trip time estimates may be recalculated),
+ * but we have no back pointers at the moment.