diff --git a/route_test.go b/route_test.go
index 06f2e7c..2ed217e 100644
--- a/route_test.go
+++ b/route_test.go
@@ -117,15 +117,70 @@ func TestRouteMessageUnmarshalBinary(t *testing.T) {
 			err: errInvalidRouteMessageAttr,
 		},
 		{
-			name: "data",
+			name: "full",
 			b: []byte{
-				0x02, 0x08, 0x00, 0x00, 0xfe, 0x04, 0x00, 0x01,
-				0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x01, 0x00,
-				0x0a, 0x00, 0x00, 0x00, 0x08, 0x00, 0x07, 0x00,
-				0x0a, 0x64, 0x0a, 0x01, 0x08, 0x00, 0x04, 0x00,
-				0x05, 0x00, 0x00, 0x00, 0x08, 0x00, 0x17, 0x00,
-				0xe8, 0x03, 0x00, 0x00, 0x0c, 0x00, 0x08, 0x80,
-				0x08, 0x00, 0x02, 0x00, 0xdc, 0x05, 0x00, 0x00,
+				// RouteMessage struct literal
+				//
+				// Family
+				0x02,
+				// DstLength
+				0x08,
+				// SrcLength
+				0x00,
+				// Tos
+				0x00,
+				// Table
+				0xfe,
+				// Protocol
+				0x04,
+				// Scope
+				0x00,
+				// Type
+				0x01,
+				// Flags
+				0x00, 0x00, 0x00, 0x00,
+				// RouteAttributes
+				// 2 bytes length, 2 bytes type, N bytes value
+				//
+				// Dst
+				0x08, 0x00, 0x01, 0x00,
+				0x0a, 0x00, 0x00, 0x00,
+				// Src
+				0x08, 0x00, 0x07, 0x00,
+				0x0a, 0x64, 0x0a, 0x01,
+				// Gateway
+				0x08, 0x00, 0x05, 0x00,
+				0x0a, 0x00, 0x00, 0x01,
+				// OutIface
+				0x08, 0x00, 0x04, 0x00,
+				0x05, 0x00, 0x00, 0x00,
+				// Priority
+				0x08, 0x00, 0x06, 0x00,
+				0x01, 0x00, 0x00, 0x00,
+				// Table
+				0x08, 0x00, 0x0f, 0x00,
+				0x02, 0x00, 0x00, 0x00,
+				// Mark
+				0x08, 0x00, 0x10, 0x00,
+				0x03, 0x00, 0x00, 0x00,
+				// Expires
+				0x08, 0x00, 0x17, 0x00,
+				0xe8, 0x03, 0x00, 0x00,
+				// RouteMetrics
+				// Length must be manually adjusted as more fields are added.
+				0x24, 0x00, 0x08, 0x80,
+				// AdvMSS
+				0x08, 0x00, 0x08, 0x00,
+				0x01, 0x00, 0x00, 0x00,
+				// Features
+				0x08, 0x00, 0x0c, 0x00,
+				0xff, 0xff, 0xff, 0xff,
+				// InitCwnd
+				0x08, 0x00, 0x0b, 0x00,
+				0x02, 0x00, 0x00, 0x00,
+				// MTU
+				0x08, 0x00, 0x02, 0x00,
+				0xdc, 0x05, 0x00, 0x00,
 			},
 			m: &RouteMessage{
 				Family:    2,
@@ -135,12 +190,19 @@ func TestRouteMessageUnmarshalBinary(t *testing.T) {
 				Scope:     unix.RT_SCOPE_UNIVERSE,
 				Type:      unix.RTN_UNICAST,
 				Attributes: RouteAttributes{
-					Dst:      net.IP{0x0a, 0x00, 0x00, 0x00},
-					Src:      net.IP{0x0a, 0x64, 0x0a, 0x01},
+					Dst:      net.IPv4(10, 0, 0, 0),
+					Src:      net.IPv4(10, 100, 10, 1),
+					Gateway:  net.IPv4(10, 0, 0, 1),
 					OutIface: 5,
+					Priority: 1,
+					Table:    2,
+					Mark:     3,
 					Expires:  &timeout,
 					Metrics: &RouteMetrics{
-						MTU: 1500,
+						AdvMSS:   1,
+						Features: 0xffffffff,
+						InitCwnd: 2,
+						MTU:      1500,
 					},
 				},
 			},