From 6f7f908bca0b8619e9e251a23738d27df57c4d82 Mon Sep 17 00:00:00 2001
From: Jonni Liljamo <jonni@liljamo.com>
Date: Wed, 9 Oct 2024 13:25:59 +0300
Subject: [PATCH] feat: log unsupported Opcodes

---
 internal/dns/handle.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/internal/dns/handle.go b/internal/dns/handle.go
index 29a040d..b9b9979 100644
--- a/internal/dns/handle.go
+++ b/internal/dns/handle.go
@@ -7,7 +7,11 @@
 
 package dns
 
-import "github.com/miekg/dns"
+import (
+	"log/slog"
+
+	"github.com/miekg/dns"
+)
 
 func handleDNSRequest(w dns.ResponseWriter, r *dns.Msg) {
 	m := new(dns.Msg)
@@ -17,6 +21,9 @@ func handleDNSRequest(w dns.ResponseWriter, r *dns.Msg) {
 	switch r.Opcode {
 	case dns.OpcodeQuery:
 		parseQuery(m, r)
+	default:
+		slog.Info("Unsupported Opcode", slog.String("type", dns.OpcodeToString[r.Opcode]))
+		m.SetRcode(r, dns.RcodeNotImplemented)
 	}
 
 	w.WriteMsg(m)
-- 
2.44.1