Signed-off-by: Karel Zak <kzak@redhat.com>
given \fInamespace\fP. The \fInamespace\fP identifier is an inode number.
Note that lsns reads information directly from /proc filesystem and for
-non-root users it may returns incomplte information.
+non-root users it may returns incomplete information. The current
+/proc filesystem may be unshared and affected by PID namespace (see \fBunshare --mount-proc\fP
+for more details).
+.B lsns
+is not able to see persistent namespaces without processes where the namespace
+instance is hold by the bind mount to /proc/[pid]/ns/[type].
.SH OPTIONS
.TP