rib: Enable Readvertise-to-NLSR

Change-Id: If50ffe740e8137ca2aeed67be219f6487153af9f
refs: #3818
diff --git a/nfd.conf.sample.in b/nfd.conf.sample.in
index b1b704a..819e038 100644
--- a/nfd.conf.sample.in
+++ b/nfd.conf.sample.in
@@ -366,4 +366,8 @@
     ; policy. Initially, the wait time is set to base_retry_wait, then it will be doubled for every
     ; retry unless beyond the max_retry_wait, in which case max_retry_wait is set as the wait time.
   }
+
+  ; If enabled, routes registered with origin=client (typically from auto_prefix_propagate)
+  ; will be readvertised into local NLSR daemon.
+  readvertise_nlsr no
 }