IPv6
/ˌaɪ piː viː ˈsɪks/ · Abbreviation · Development
Definitions
The successor to IPv4, using 128-bit addresses written in hexadecimal groups such as 2001:db8::1. It vastly expands address space and includes protocol-level features such as stateless autoconfiguration and simplified packet header design.
In plain English: It is the newer internet addressing system with far more possible addresses for connected devices.
Example: "We finally enabled IPv6 on the edge, so the mobile clients aren't hairpinning through NAT anymore."