IPv6Network - IPv6 Over Even a protocol as advanced as IPv6 can’t do everything on its own. Like IPv4 and other networklayerprotocols, IPv6 needs the assistance of lower layer protocols to get packets from one systemto the next. Protocols at these lower layers are all about turning electromagnetic signals into bits (the OSI physical layer) and a stream of bits into a coherent frame (the OSI datalink layer). “Frame” is the datalink layer term for what becomes a “packet” at the network layer. Because lower layer protocols can have very different characteristics, typically, they need their own standard for carrying IPv6 packets. This is standardized in various “IPv6 over ...” RFCs.