<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  Describe the difference between IPv4 and IPv6. Context: The difference between IPv4 and IPv6 lies in the use of 32-bit addresses for IPv4 and 128-bit addresses for IPv6 for device identification on a network. Answer: [/INST]IPv4 uses 32-bit addresses while IPv6 uses 128-bit addresses for device identification on a network.</s>