Nov 012016
 

Internet Protocol version 6 (IPv6)

In the course of troubleshooting a pseudo-distributed mode installation of Apache Hadoop on my Ubuntu 16.04 vm, one of the tips I stumbled across suggested disabling IPv6.

For any networking neophytes, Internet Protocol version 6, aka IPv6, is the most recent version of the Internet Protocol (IP), the system governing the assignment of addresses to networks and computers on the Internet. IPv6 was created to replace IPv4 which, why still predominantly used by most systems, is quickly running out available addresses. Unlike IPv4, which is a 32 bit addressing scheme offering 2^{32} or roughly 4.3 billion addresses, IPv6 addresses are 128 bits, meaning that there are theoretically 2^{128} or roughly 3.4 \times 10^{38} addresses.

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