Document that BIND backend hosted zones can't be altered from the API

diff --git a/docs/backends/bind.rst b/docs/backends/bind.rst
index 29ce67a7c8f7c975ae558c3d852726843edef11f..0dc1bf9efb00512da3641dd07fd40d407273d0ec 100644 (file)
--- a/docs/backends/bind.rst
+++ b/docs/backends/bind.rst
@@ -9,6 +9,7 @@ Bind zone file backend
 * DNSSEC: Yes
 * Disabled data: No
 * Comments: No
+* API: Read-only
 * Module name: bind
 * Launch: ``bind``
 
@@ -21,6 +22,8 @@ information about zones from it. It makes no attempt to honour other
 configuration flags, which you should configure (when available) using
 the PowerDNS native configuration.
 
+**note**: Because this backend retrieves its configuration from a text file and not a database, the HTTP API is unable to process changes for this backend. This effectively makes the API read-only for zones hosted by the BIND backend.  
+
 Configuration Parameters
 ------------------------