Yeah, resolving twice is a really bad idea. A good rule of thumb for security: if you think you have a clever hack (e.g. checking DNS twice as a workaround to n

Yeah, resolving twice is a really bad idea. A good rule of thumb for security: if you think you have a clever hack (e.g. checking DNS twice as a workaround to not being able to patch DNS resolution), it probably isn't so clever as you think.