How can one distinguish the host and the port in an IPv6 URL?

The notation in that case is to encode the IPv6 IP number in square brackets: http://[2001:db8:1f70::999:de8:7648:6e8]:100/ That’s RFC 3986, section 3.2.2: Host A host identified by an Internet Protocol literal address, version 6 [RFC3513] or later, is distinguished by enclosing the IP literal within square brackets (“[” and “]”). This is the only place where … Read more

What is IPV6 for localhost and 0.0.0.0?

As we all know that IPv4 address for localhost is 127.0.0.1 (loopback address). Actually, any IPv4 address in 127.0.0.0/8 is a loopback address. In IPv6, the direct analog of the loopback range is ::1/128. So ::1 (long form 0:0:0:0:0:0:0:1) is the one and only IPv6 loopback address. While the hostname localhost will normally resolve to 127.0.0.1 or ::1, I have seen cases where someone has bound it to an IP … Read more

what does “dead beef” mean?

http://en.wikipedia.org/wiki/Hexspeakhttp://www.urbandictionary.com/define.php?term=dead%3Abeef “Dead beef” is a very popular sentence in programming, because it is built only from letters a-f, which are used in hexadecimal notation. Colons in the beginning and in the middle of the sentence make this sentence a (theoretically) valid IPv6 address.