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**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
<option value="gorilla">A gorilla!</option>
      </select>
    );
    const markup = ReactDOMServer.renderToString(stub);
    expect(markup).toContain('<option selected="" value="giraffe"');
    expect(markup).not.toContain('<option selected="" value="monkey"');
    expect(markup).not.toContain('<option selected="" value="gorilla"');
  });
  it('should support server-side rendering with defaultValue', () => {
    const stub = (
      <select defaultValue="giraffe">
        <option value="monkey">A monkey!</option>
        <option value="giraffe">A giraffe!</option>
        <option value="gorilla">A gorilla!</option>
      </select>
    );
    const markup = ReactDOMServer.renderToString(stub);
    expect(markup).toContain('<option selected="" value="giraffe"');
    expect(markup).not.toContain('<option selected="" value="monkey"');
    expect(markup).not.toContain('<option selected="" value="gorilla"');
  });
  it('should support server-side rendering with multiple', () => {
    const stub = (
      <select multiple={true} value={['giraffe', 'gorilla']} onChange={noop}>
        <option value="monkey">A monkey!</option>
        <option value="giraffe">A giraffe!</option>
        <option value="gorilla">A gorilla!</option>
      </select>
    );
    const markup = ReactDOMServer.renderToString(stub);