Complex sentence: IPv6 uses a 128-bit address, allowing 2 128, or approximately addresses, or more than times as many as IPv4, which uses 32-bit addresses and provides approximately 4.3 billion addresses.
Split into simpler sentences: IPv6 uses a 128-bit address, theoretically allowing 2 128, or approximately addresses. The total number of possible IPv6 address is more than times as many as IPv4, which uses 32-bit addresses and provides approximately 4.3 billion addresses.