User blog comment:Sicknote45/The Elder Scrolls V: Dawnguard: Vampire Lord or Dawguard Defender/@comment-4406357-20120625214852/@comment-4406357-20120625221132

Sorry, it's the Dawnguard page. It says "Like werewolves, people will attack Vampire Lords on sight, however this will no longer happen if the Dragonborn is a regular vampire.