diff --git a/files/dawn.config b/files/dawn.config
index f275891..a763a19 100644
--- a/files/dawn.config
+++ b/files/dawn.config
@@ -6,6 +6,7 @@ config network
     option shared_key           'Niiiiiiiiiiiiiik'
     option iv                   'Niiiiiiiiiiiiiik'
     option use_symm_enc         '1'
+    option collision_domain     '0'     # enter here aps which are in the same collision domain
 
 config ordering
     option sort_order           'cbfs'