IPv6 is the IP protocol version that is being deployed these days in parallel to IPv4 and as a replacement to it.
IPv6 offers an address space of 128 bits, providing ample room for both current and future needs.
WebRTC supports both IPv4 and IPv6.
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The WebRTC Glossary is an ongoing project where users can learn more about WebRTC related terms. It is maintained by Tsahi Levent-Levi of BlogGeek.me.