doc: update hosts nsswitch setting to which consistent to man pages

diff --git a/README b/README
index bc81d4e7f8d26676a6ab23ef7220f5f5e5da72ff..4a561a65cb57382e5bb654942e0dff105be833e3 100644 (file)
--- a/README
+++ b/README
@@ -272,7 +272,7 @@ NSS:
 
                 passwd: compat mymachines systemd
                 group: compat mymachines systemd
-                hosts: files mymachines resolve myhostname
+                hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname
 
 SYSV INIT.D SCRIPTS:
         When calling "systemctl enable/disable/is-enabled" on a unit which is a