It would mean that you have precautions in place wrt to doors and gates as the dog is a bolter. For example, you might need to educate all household members and visitors to shut the dog in the kitchen/sitting room/crate before opening the front door, or to keep the gate locked shut at all times, to have stairgates up to prevent an unexpected rushing onto the street and so on.
Actually it means you should arrange for a red carpet and showers of rose petals when they leave the house. Regular small crowds of adoring fans and a few paps are also helpful. The owner should be standing behind ready to graciously receive any bouquets brought by small children.