diff --git a/app-crypt/mit-krb5/files/mit-krb5kdc.confd b/app-crypt/mit-krb5/files/mit-krb5kdc.confd
new file mode 100644
--- /dev/null
+++ b/app-crypt/mit-krb5/files/mit-krb5kdc.confd
@@ -0,0 +1,2 @@
+# Set the NEED_LDAP environment variable to 1 if you use the LDAP backend:
+# NEED_LDAP=1