disable ra flag for several plugins (#2408)

* disable ra flag for several plugins

* removed unnecessary assignment

* removed more unnecessary assignments

plugin/auto/auto.go

@@ -70,7 +70,7 @@ func (a Auto) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 	m.Answer, m.Ns, m.Extra = answer, ns, extra
 
 	switch result {

plugin/backend_lookup.go

@@ -422,7 +422,7 @@ func SOA(b ServiceBackend, zone string, state request.Request, opt Options) ([]d
 func BackendError(b ServiceBackend, zone string, rcode int, state request.Request, err error, opt Options) (int, error) {
 	m := new(dns.Msg)
 	m.SetRcode(state.Req, rcode)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 	m.Ns, _ = SOA(b, zone, state, opt)
 
 	state.W.WriteMsg(m)

plugin/etcd/handler.go

@@ -82,7 +82,7 @@ func (e *Etcd) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 	m.Answer = append(m.Answer, records...)
 	m.Extra = append(m.Extra, extra...)
 

plugin/etcd/stub_handler.go

@@ -32,7 +32,6 @@ func (s Stub) ServeDNS(ctx context.Context, w dns.ResponseWriter, req *dns.Msg)
 	if e != nil {
 		return dns.RcodeServerFailure, e
 	}
-	m.RecursionAvailable = true
 	w.WriteMsg(m)
 	return dns.RcodeSuccess, nil
 }

plugin/federation/federation.go

@@ -104,7 +104,7 @@ func (f *Federation) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 
 	m.Answer = []dns.RR{service.NewCNAME(state.QName(), service.Host)}
 

plugin/file/file.go

@@ -50,7 +50,7 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 		if z.isNotify(state) {
 			m := new(dns.Msg)
 			m.SetReply(r)
-			m.Authoritative, m.RecursionAvailable = true, true
+			m.Authoritative = true
 			w.WriteMsg(m)
 
 			log.Infof("Notify from %s for %s: checking transfer", state.IP(), zone)
@@ -83,7 +83,7 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 	m.Answer, m.Ns, m.Extra = answer, ns, extra
 
 	switch result {

plugin/hosts/hosts.go

@@ -63,7 +63,7 @@ func (h Hosts) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 	m.Answer = answers
 
 	w.WriteMsg(m)

plugin/kubernetes/handler.go

@@ -16,7 +16,7 @@ func (k Kubernetes) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.M
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 
 	zone := plugin.Zones(k.Zones).Matches(state.Name())
 	if zone == "" {

plugin/route53/route53.go

@@ -110,7 +110,7 @@ func (h *Route53) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
 
 	m := new(dns.Msg)
 	m.SetReply(r)
-	m.Authoritative, m.RecursionAvailable = true, true
+	m.Authoritative = true
 	var result file.Result
 	for _, hostedZone := range z {
 		h.zMu.RLock()

plugin/route53/route53_test.go

@@ -101,7 +101,7 @@ func TestRoute53(t *testing.T) {
 			}
 			m.Answer = []dns.RR{rr}
 
-			m.Authoritative, m.RecursionAvailable = true, true
+			m.Authoritative = true
 			rcode = dns.RcodeSuccess
 		}
 

plugin/template/template.go

@@ -75,7 +75,7 @@ func (h Handler) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg)
 
 		msg := new(dns.Msg)
 		msg.SetReply(r)
-		msg.Authoritative, msg.RecursionAvailable = true, true
+		msg.Authoritative = true
 		msg.Rcode = template.rcode
 
 		for _, answer := range template.answer {