diff --git a/docs/admin/node.md b/docs/admin/node.md
index 1b394eb912..b60d7a6f86 100644
--- a/docs/admin/node.md
+++ b/docs/admin/node.md
@@ -165,6 +165,13 @@ completely unhealthy (i.e. there are no healthy nodes in the cluster). In such
 case, the node controller assumes that there's some problem with master
 connectivity and stops all evictions until some connectivity is restored.
 
+Starting in Kubernetes 1.6, the NodeController is also responsible for evicting
+pods that are running on nodes with `NoExecute` taints, when the pods do not tolerate
+the taints. Additionally, as an alpha feature that is disabled by default, the
+NodeController is responsible for adding taints corresponding to node problems like
+node unreachable or not ready. See [this documentation](/docs/user-guide/node-selection/index.md#taints-and-tolerations-beta-feature)
+for details about `NoExecute` taints and the alpha feature.
+
 ### Self-Registration of Nodes
 
 When the kubelet flag `--register-node` is true (the default), the kubelet will attempt to