diff --git a/man/nss-mymachines.xml b/man/nss-mymachines.xml
index 03fcd4308e..baec10954b 100644
--- a/man/nss-mymachines.xml
+++ b/man/nss-mymachines.xml
@@ -39,6 +39,15 @@
Note that the name that is resolved is the one registered with systemd-machined, which
may be different than the hostname configured inside of the container.
+ Note that this NSS module only makes available names of the containers running immediately below
+ the current system context. It does not provide host name resolution for containers running side-by-side
+ with the invoking system context, or containers further up or down the container hierarchy. Or in other
+ words, on the host system it provides host name resolution for the containers running immediately below
+ the host environment. When used inside a container environment however, it will not be able to provide
+ name resolution for containers running on the host (as those are siblings and not children of the current
+ container environment), but instead only for nested containers running immediately below its own
+ container environment.
+
To activate the NSS module, add mymachines to the line starting with
hosts: in /etc/nsswitch.conf.