skip test as it requires admin right

transport/internet/sockopt_linux_test.go

@@ -12,6 +12,8 @@ import (
 )
 
 func TestSockOptMark(t *testing.T) {
+	t.Skip("requires CAP_NET_ADMIN")
+
 	tcpServer := tcp.Server{
 		MsgProcessor: func(b []byte) []byte {
 			return b