diff --git a/etc/hosts.allow b/etc/hosts.allow
index 47d57d11f2ac..5af0f0ec3b5f 100644
--- a/etc/hosts.allow
+++ b/etc/hosts.allow
@@ -36,7 +36,9 @@ ALL : PARANOID : RFC931 20 : deny
 
 # Allow anything from localhost.  Note that an IP address (not a host
 # name) *MUST* be specified for rpcbind(8).
-ALL : localhost 127.0.0.1 [::1] : allow
+ALL : localhost 127.0.0.1 : allow
+# Comment out next line if you build libwrap with NO_INET6=yes.
+ALL : [::1] : allow
 ALL : my.machine.example.com 192.0.2.35 : allow
 
 # To use IPv6 addresses you must enclose them in []'s