@@ 22719,9 22719,9 @@ Logging level.
This service type adds a list of known Facebook hosts to the
@file{/etc/hosts} file.
(@pxref{Host Names,,, libc, The GNU C Library Reference Manual})
-Each line contains a entry that maps a known server name of the Facebook
-on-line service---e.g., @code{www.facebook.com}---to the local
-host---@code{127.0.0.1} or its IPv6 equivalent, @code{::1}.
+Each line contains an entry that maps a known server name of the Facebook
+on-line service---e.g., @code{www.facebook.com}---to unroutable IPv4 and
+IPv6 addresses.
This mechanism can prevent programs running locally, such as Web
browsers, from accessing Facebook.