From d56b459d9ad7406c50439dc33a18e3f8f2570d03 Mon Sep 17 00:00:00 2001
From: Niklas <niklas@kapelle.org>
Date: Mon, 1 Feb 2021 00:03:38 +0100
Subject: [PATCH] resolve CNAME

---
 internal/cooldns.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/internal/cooldns.go b/internal/cooldns.go
index 1c8ae35..b6d93af 100644
--- a/internal/cooldns.go
+++ b/internal/cooldns.go
@@ -409,6 +409,14 @@ func handleRequest(w dns.ResponseWriter, r *dns.Msg, zone zoneView) {
 				m.Extra = append(m.Extra, zone.rr[dns.TypeAAAA][t.Ns]...)
 			}
 		}
+	case dns.TypeCNAME:
+		// Resolve CNAME
+		for _, cnameRR := range m.Answer {
+			if t, ok := cnameRR.(*dns.CNAME); ok {
+				m.Extra = append(m.Extra, zone.rr[dns.TypeA][t.Target]...)
+				m.Extra = append(m.Extra, zone.rr[dns.TypeAAAA][t.Target]...)
+			}
+		}
 	}
 
 	if len(m.Answer) == 0 {