1 files changed, 34 insertions, 0 deletions
diff --git a/internal/dns/rr_unknown.go b/internal/dns/rr_unknown.go
new file mode 100644
index 0000000..77ae46d
--- /dev/null
+++ b/internal/dns/rr_unknown.go
@@ -0,0 +1,34 @@
+package dns
+
+// https://datatracker.ietf.org/doc/html/rfc3597
+
+import "fmt"
+
+type Unknown struct {
+	RRType uint16
+	Data   []byte
+}
+
+func (u *Unknown) Type() uint16 {
+	return u.RRType
+}
+
+func (u *Unknown) Pack(p *packer) error {
+	p.buf = append(p.buf, u.Data...)
+	return nil
+}
+
+func (u *Unknown) Unpack(ru *unpacker, length uint16) error {
+	if ru.off+int(length) > len(ru.buf) {
+		return fmt.Errorf("dns: short unknown rdata")
+	}
+
+	u.Data = make([]byte, length)
+	copy(u.Data, ru.buf[ru.off:ru.off+int(length)])
+	ru.off += int(length)
+	return nil
+}
+
+func (u *Unknown) String() string {
+	return fmt.Sprintf("\\# %d %x", len(u.Data), u.Data)
+}