Please, tell me truth about what debugging status you are displaying.
diff --git a/ripngd/ripng_debug.c b/ripngd/ripng_debug.c
index 2cff3d0..b9a8fb6 100644
--- a/ripngd/ripng_debug.c
+++ b/ripngd/ripng_debug.c
@@ -36,7 +36,7 @@
        "RIPng configuration\n"
        "Debugging information\n")
 {
-  vty_out (vty, "Zebra debugging status:%s", VTY_NEWLINE);
+  vty_out (vty, "RIPng debugging status:%s", VTY_NEWLINE);
 
   if (IS_RIPNG_DEBUG_EVENT)
     vty_out (vty, "  RIPng event debugging is on%s", VTY_NEWLINE);