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  2. Subnet - Wikipedia

    en.wikipedia.org/wiki/Subnet

    The routing prefix may be expressed as the first address of a network, written in Classless Inter-Domain Routing (CIDR) notation, followed by a slash character (/), and ending with the bit-length of the prefix. For example, 198.51.100.0 / 24 is the prefix of the Internet Protocol version 4 network starting at the given address, having 24 bits ...

  3. IPv6 address - Wikipedia

    en.wikipedia.org/wiki/IPv6_address

    The size of a block of addresses is specified by writing a slash (/) followed by a number in decimal whose value is the length of the network prefix in bits. For example, an address block with 48 bits in the prefix is indicated by / 48. Such a block contains 2 128 − 48 = 2 80 addresses. The smaller the length of the network prefix, the larger ...

  4. Link-local address - Wikipedia

    en.wikipedia.org/wiki/Link-local_address

    Link-local addresses may be assigned manually by an administrator or by automatic operating system procedures. In Internet Protocol (IP) networks, they are assigned most often using stateless address autoconfiguration, a process that often uses a stochastic process to select the value of link-local addresses, assigning a pseudo-random address that is different for each session.

  5. Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    A subnet mask is a bitmask that encodes the prefix length associated with an IPv4 address or network in quad-dotted notation: 32 bits, starting with a number of 1-bits equal to the prefix length, ending with 0-bits, and encoded in four-part dotted-decimal format: 255.255.255.0. A subnet mask encodes the same information as a prefix length but ...

  6. IPv6 - Wikipedia

    en.wikipedia.org/wiki/IPv6

    On these operating systems, a program must open a separate socket for each IP protocol it uses. On some systems, e.g., the Linux kernel, NetBSD, and FreeBSD, this feature is controlled by the socket option IPV6_V6ONLY. [64]: 22 The address prefix 64:ff9b::/96 is a class of IPv4-embedded IPv6 addresses for use in NAT64 transition methods. [65]

  7. Prefix delegation - Wikipedia

    en.wikipedia.org/wiki/Prefix_delegation

    For example, in a typical home network with legacy Internet Protocol version 4, the network prefix would be something like 192.168.1.0/24, as expressed in CIDR notation. With IPv4, commonly home networks use private addresses (defined in RFC 1918 ) that are non-routable on the public Internet and use address translation to convert to routable ...

  8. IP address - Wikipedia

    en.wikipedia.org/wiki/IP_address

    The term subnet mask is only used within IPv4. Both IP versions however use the CIDR concept and notation. In this, the IP address is followed by a slash and the number (in decimal) of bits used for the network part, also called the routing prefix. For example, an IPv4 address and its subnet mask may be 192.0.2.1 and 255.255.255.0, respectively.

  9. Network address translation - Wikipedia

    en.wikipedia.org/wiki/Network_address_translation

    The large addressing space of IPv6 can still be defeated depending on the actual prefix length given by the carrier. It is not uncommon to be handed a /64 prefix – the smallest recommended subnet – for an entire home network, requiring a variety of techniques to be used to manually subdivide the range for all devices to remain reachable. [30]