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A unique local address (ULA) is an IPv6 non-globally-routable subnet identifier, as defined in RFC 4193. They are supposed to be used for systems that are not connected to the Internet. They can be used for instance as address space in a factory, allowing the use for IPv6 for every machine.
In 2003, RFC 3513 defined [...]

To a great extent, IPv6 is a conservative extension of IPv4. Most transport- and application-layer protocols need little or no change to work over IPv6; exceptions are applications protocols that embed network-layer addresses (such as FTP or NTPv3).
Applications, however, usually need small changes and a recompile in order to run over IPv6.

Zeroconf or Zero Configuration Networking is a set of techniques that automatically create a usable IP network without configuration or special servers. This allows inexpert users to connect computers, networked printers, and other items together and expect them to work automatically. Without Zeroconf or something similar, a knowledgeable user must either set up special services, [...]

In Internet terminology, a private network is a network that uses RFC 1918 IP address space. Computers may be allocated addresses from this address space when it is necessary for them to communicate with other computing devices on an internal network (non-Internet).
Private networks are becoming quite common in office local area network (LAN) designs, as [...]

Proxy ARP is a technique for using the ARP protocol to provide an ad hoc routing mechanism.
A multi-port networking device (e.g. a router) implementing Proxy ARP will respond to ARP requests on one interface as being responsible for addresses of device addresses on another interface. The device can then receive and forward packets addressed to [...]

ARP Mediation refers to the process of resolving Layer 2 addresses when different resolution protocols are used on either circuit, e.g. ATM on one end and Ethernet on the other.

The IPv6 packet is composed of two main parts: the header and the payload.
The header is in the first 40 bytes (320 bits) of the packet and contains both source and destination addresses (128 bits each), as well as the version (4-bit IP version), traffic class (8 bits, Packet Priority), flow label (20 bits, QoS [...]

ARP translates Layer 3 addresses to Layer 2 addresses, therefore InARP can be viewed as its inverse. In addition, InARP is actually implemented as an extension to ARP. The packet formats are the same, only the operation code and the filled fields differ.
Reverse ARP (RARP), like InARP, also translates Layer 2 addresses to Layer 3 [...]

The Open Shortest Path First (OSPF) protocol is a hierarchical interior gateway protocol (IGP) for routing in Internet Protocol, using a link-state in the individual areas that make up the hierarchy. A computation based on Dijkstra’s algorithm is used to calculate the shortest path tree inside each area. The current version, Version 3, defined in [...]

In computer networking, the Address Resolution Protocol (ARP) is the standard method for finding a host’s hardware address when only its network layer address is known.
ARP is not an IP-only or Ethernet-only protocol; it can be used to resolve many different network-layer protocol addresses to hardware addresses, although, due to the overwhelming prevalence of IPv4 [...]