diff --git a/content/u/blog/ipv6-router-advertisement-without-default-router/contents.lr b/content/u/blog/ipv6-router-advertisement-without-default-router/contents.lr
index b5ef891..64f4094 100644
--- a/content/u/blog/ipv6-router-advertisement-without-default-router/contents.lr
+++ b/content/u/blog/ipv6-router-advertisement-without-default-router/contents.lr
@@ -67,3 +67,10 @@ interface eth0
 
 Client in this test network assign themselves an additional IPv6
 address from this prefix.
+
+## Note
+
+While clients won't select this router as the default router, they
+might still choose to use an IPv6 address from this prefix as their
+**source address**. More details about it can be found in the
+[RFC 6724](https://tools.ietf.org/html/rfc6724).