Vegan is on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
A Vietnamese restaurant that is vegetarian by its own name and menu: pho, bun bo Hue and hot pots with mock meats. Some noodles contain egg and the iced coffee uses condensed milk, so ask for vegan.