diff --git a/radix-tree.rkt b/radix-tree.rkt
index 679fdcb..7dafeed 100644
--- a/radix-tree.rkt
+++ b/radix-tree.rkt
@@ -2,7 +2,7 @@
 
 (require "iputil.rkt")
 
-(provide make-rt rt-update! rt-lookup rt-dump)
+(provide make-rt rt-update! rt-lookup rt-dump rt-flatten)
 
 (struct rt-node [edge0 edge1 data] #:transparent #:mutable)
 (struct rt-edge [label target] #:transparent)
@@ -82,6 +82,15 @@
      [(list _ ... visited)
       visited])))
 
+(define (rt-flatten node)
+  (if node
+      (let* ([e1 (rt-node-edge0 node)]
+             [e2 (rt-node-edge1 node)]
+             [data (rt-node-data node)]
+             [rst (append (rt-flatten e1) (rt-flatten e2))])
+        (if (equal? data empty-node-data) rst (cons data rst)))
+      '()))
+
 ; (define test (make-rt))
 ; (define (test-insert! x)
 ;   (rt-update!
diff --git a/router b/router
index 0952a66..0779af9 100755
--- a/router
+++ b/router
@@ -63,6 +63,13 @@
     [(list* (cons peer _) _) peer]
     [_ #f]))
 
+;; Router -> Msg
+;; Dumps routing table
+(define (router-dump rt src dst)
+    (msg:table (sub1 src) src
+               (map (lambda (route) (list (route-subnet route) (route-nexthop route)))
+                    (rt-flatten rt))))
+
 ;; Str [Listof Peer-Conn] -> Void
 ;; --
 ;; Runs router logic, given a list of peer connections.