<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 differences between IPv4 and IPv6. Context: The differences between IPv4 and IPv6 include the address space and the number of available IP addresses. Answer: [/INST]It includes the address space and the number of available IP addresses.</s>