2 files changed, 27 insertions, 1 deletions
diff --git a/dhcpv6/option_nontemporaryaddress.go b/dhcpv6/option_nontemporaryaddress.go
index b387e43..cd3d830 100644
--- a/dhcpv6/option_nontemporaryaddress.go
+++ b/dhcpv6/option_nontemporaryaddress.go
@@ -81,6 +81,6 @@ func ParseOptIANA(data []byte) (*OptIANA, error) {
 	copy(opt.iaId[:], data[:4])
 	opt.t1 = binary.BigEndian.Uint32(data[4:8])
 	opt.t2 = binary.BigEndian.Uint32(data[8:12])
-	copy(opt.options, data[12:])
+	opt.options = append(data[12:])
 	return &opt, nil
 }
diff --git a/dhcpv6/option_nontemporaryaddress_test.go b/dhcpv6/option_nontemporaryaddress_test.go
new file mode 100644
index 0000000..eac1ef9
--- /dev/null
+++ b/dhcpv6/option_nontemporaryaddress_test.go
@@ -0,0 +1,26 @@
+package dhcpv6
+
+import (
+	"testing"
+)
+
+func TestOptIANAParseOptIANA(t *testing.T) {
+	data := []byte{
+		02,            // advertise
+		0, 0x80, 0x8b, // transaction ID
+		// IA_NA option
+		0, 3, // option code
+		0, 40, // option length
+		1, 0, 0, 0, // IAID
+		0, 0, 0, 1, // T1
+		0, 0, 0, 2, // T2
+		0, 5, 0, 0x18, 0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0, 0, 0, 0xb2, 0x7a, 0, 0, 0xc0, 0x8a, // options
+	}
+	opt, err := ParseOptIANA(data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if oLen := opt.Length(); oLen != len(data) {
+		t.Fatalf("Invalid IANA option length. Expected %v, got %v", len(data), oLen)
+	}
+}