Implement external lookups for CNAMEs

middleware/auto/auto.go

@@ -34,7 +34,7 @@ type (
 		// In the future this should be something like ZoneMeta that contains all this stuff.
 		transferTo []string
 		noReload   bool
-		Proxy      proxy.Proxy // Proxy for looking up names during the resolution process
+		proxy      proxy.Proxy // Proxy for looking up names during the resolution process
 
 		duration time.Duration
 	}

middleware/auto/setup.go

@@ -155,7 +155,7 @@ func autoParse(c *caddy.Controller) (Auto, error) {
 							args[i] = h + ":53"
 						}
 					}
-					a.loader.Proxy = proxy.New(args)
+					a.loader.proxy = proxy.New(args)
 
 				default:
 					t, _, e := file.TransferParse(c, false)

middleware/auto/walk.go

@@ -51,6 +51,7 @@ func (a Auto) Walk() error {
 		}
 
 		zo.NoReload = a.loader.noReload
+		zo.Proxy = a.loader.proxy
 		zo.TransferTo = a.loader.transferTo
 
 		a.Zones.Add(zo, origin)