diff --git a/ipv6/sockopt_test.go b/ipv6/sockopt_test.go
index 8ac322b..3305cfc 100644
--- a/ipv6/sockopt_test.go
+++ b/ipv6/sockopt_test.go
@@ -40,12 +40,7 @@
 	defer c.Close()
 
 	if pmtu, err := ipv6.NewConn(c).PathMTU(); err != nil {
-		switch runtime.GOOS {
-		case "darwin", "ios": // older darwin kernels don't support IPV6_PATHMTU option
-			t.Logf("not supported on %s", runtime.GOOS)
-		default:
-			t.Fatal(err)
-		}
+		t.Fatal(err)
 	} else {
 		t.Logf("path mtu for %v: %v", c.RemoteAddr(), pmtu)
 	}
@@ -78,12 +73,7 @@
 	defer c.Close()
 
 	if pmtu, err := ipv6.NewConn(c).PathMTU(); err != nil {
-		switch runtime.GOOS {
-		case "darwin", "ios": // older darwin kernels don't support IPV6_PATHMTU option
-			t.Logf("not supported on %s", runtime.GOOS)
-		default:
-			t.Fatal(err)
-		}
+		t.Fatal(err)
 	} else {
 		t.Logf("path mtu for %v: %v", c.RemoteAddr(), pmtu)
 	}
diff --git a/ipv6/unicastsockopt_test.go b/ipv6/unicastsockopt_test.go
index 9b8df33..ac0daf2 100644
--- a/ipv6/unicastsockopt_test.go
+++ b/ipv6/unicastsockopt_test.go
@@ -96,11 +96,6 @@
 
 	tclass := iana.DiffServCS0 | iana.NotECNTransport
 	if err := c.SetTrafficClass(tclass); err != nil {
-		switch runtime.GOOS {
-		case "darwin", "ios": // older darwin kernels don't support IPV6_TCLASS option
-			t.Logf("not supported on %s", runtime.GOOS)
-			goto next
-		}
 		t.Fatal(err)
 	}
 	if v, err := c.TrafficClass(); err != nil {
@@ -109,7 +104,6 @@
 		t.Fatalf("got %v; want %v", v, tclass)
 	}
 
-next:
 	hoplim := 255
 	if err := c.SetHopLimit(hoplim); err != nil {
 		t.Fatal(err)