<!--
  Note: if the issue is about documentation or the website, please file it at:
  https://github.com/reactjs/reactjs.org/issues/new
-->

**Do you want to request a *feature* or report a *bug*?**

Bug

**What is the current behavior?**

See fiddle https://jsfiddle.net/j2nzg31L/1/

The warning related to the select fires repeatedly.  @gaearon tells me it should dedupe, and that this is a bug.

**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template for React 16: https://jsfiddle.net/Luktwrdm/, template for React 15: https://jsfiddle.net/hmbg7e9w/).**

See above

**What is the expected behavior?**

See above

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

16.2
if (__DEV__) {
    warning(
      props.selected == null,
      'Use the `defaultValue` or `value` props on <select> instead of ' +
        'setting `selected` on <option>.',
    );
  }
}
export function postMountWrapper(element: Element, props: Object) {
  
  if (props.value != null) {
    element.setAttribute('value', props.value);
  }
}
export function getHostProps(element: Element, props: Object) {
  const hostProps = {children: undefined, ...props};
  const content = flattenChildren(props.children);
  if (content) {
    hostProps.children = content;
  }
  return hostProps;
}