Place the 3 pound boneless pork butt roast into a 5-6 quart slow cooker.
Pour in 1 cup chicken broth, 1/4 cup soy sauce, 2 tablespoons fish sauce, 1/2 teaspoon ground ginger and mince and stir in the 3 cloves garlic.
Cover and cook on low 8 to 10 hours.
Meanwhile, in a small bowl, combine daikon radish and carrots. Top with 1/4 cup rice vinegar, cover, and refrigerate until ready to serve.
When just about ready to serve, shred pork and stir in lime juice.
Spoon 1/2 cup meat, hot or cold, onto each crusty baguette. Top with daikon radish and carrot mixture, cucumber slices, cilantro leaves, and jalapeno slices, and serve.