diff --git a/How-to-run-multiple-user-docker-daemons.md b/How-to-run-multiple-user-docker-daemons.md
index 9c77c9c..a6778a9 100644
--- a/How-to-run-multiple-user-docker-daemons.md
+++ b/How-to-run-multiple-user-docker-daemons.md
@@ -123,9 +123,11 @@ docker run -e CATTLE_AGENT_IP="172.20.0.2"  --rm --privileged -v /var/run/docker
 
 ## Limitations
 
+As Rancher uses the overlay network by default, only one RancherOS host can be used in one Env.
+
 ## Others
 
-Please submit any RancherOS bugs, issues to [rancher/os](https://github.com/rancher/os/issues), and adding this label `multiple-user-docker` would be very friendly.
+Please submit any bugs, issues for this feature to [rancher/os](https://github.com/rancher/os/issues), and adding this label `multiple-user-docker` would be very friendly.