Preheat oven to 350, grease and flour (2) 9x5 inch loaves. Whisk together the flour, baking soda and salt and set aside. In mixer beat eggs, sugar and vegetable oil. Add the flour mixture, the vanilla, bananas, coconut walnuts, and buttermilk,until just combined. Spread evenly into 2 loaf pans. Bake for 60 minutes, test.They can be frozen, iced if you want to and toasted for breakfast. Very versatile banana bread. Enjoy.