From 296f7356e0b01a99898e358480f837bd4d913e9f Mon Sep 17 00:00:00 2001
From: lordwelch <timmy@narnian.us>
Date: Tue, 23 Jun 2020 00:19:07 -0700
Subject: [PATCH] Set the recursion available flag

---
 internal/dns/dns.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/internal/dns/dns.go b/internal/dns/dns.go
index 0f1a69a..46a870c 100644
--- a/internal/dns/dns.go
+++ b/internal/dns/dns.go
@@ -480,6 +480,7 @@ func (s *Server) handleInternal(w dns.ResponseWriter, r *dns.Msg) {
 		if err == errEmpty {
 			m := new(dns.Msg)
 			m.SetReply(r)
+			m.RecursionAvailable = true
 			w.WriteMsg(m)
 			return
 		}
@@ -488,6 +489,7 @@ func (s *Server) handleInternal(w dns.ResponseWriter, r *dns.Msg) {
 	if rr != nil {
 		m := new(dns.Msg)
 		m.SetReply(r)
+		m.RecursionAvailable = true
 		m.Answer = append(m.Answer, rr)
 		w.WriteMsg(m)
 		return
@@ -495,6 +497,7 @@ func (s *Server) handleInternal(w dns.ResponseWriter, r *dns.Msg) {
 	// Send an authoritative NXDOMAIN for local:
 	m := new(dns.Msg)
 	m.SetReply(r)
+	m.RecursionAvailable = true
 	m.SetRcode(r, dns.RcodeNameError)
 	w.WriteMsg(m)
 }
@@ -582,6 +585,7 @@ func (s *Server) subnameHandler(hostname lcHostname) func(w dns.ResponseWriter,
 			if err == errEmpty {
 				m := new(dns.Msg)
 				m.SetReply(r)
+				m.RecursionAvailable = true
 				w.WriteMsg(m)
 				return
 			}
@@ -591,6 +595,7 @@ func (s *Server) subnameHandler(hostname lcHostname) func(w dns.ResponseWriter,
 			s.promInc("local", r)
 			m := new(dns.Msg)
 			m.SetReply(r)
+			m.RecursionAvailable = true
 			m.Answer = append(m.Answer, rr)
 			w.WriteMsg(m)
 			return
@@ -601,6 +606,7 @@ func (s *Server) subnameHandler(hostname lcHostname) func(w dns.ResponseWriter,
 			s.promInc("local", r)
 			m := new(dns.Msg)
 			m.SetReply(r)
+			m.RecursionAvailable = true
 			m.SetRcode(r, dns.RcodeNameError)
 			w.WriteMsg(m)
 			return