Is NAT still needed with IPv6?

Because NAT exists to overcome a shortage of IPv4 addresses, and because IPv6 has no such shortage, IPv6 networks do not require NAT. Many NAT devices (for example, small consumer routers) allow incoming connections to specific services – such as a web server – to be forwarded to hosts on the internal network.

Does IPv6 require subnetting?

If you are given a /48 subnet to work with, you will have more than enough spaces to work with i.e. you get 65536 subnets with 18,446,744,073,709,551,616 hosts per subnet. So, in all, subnetting is necessary in IPv6, but not for the reasons why we did it with IPv4.

Why would IPv6 be needed?

The primary function of IPv6 is to allow for more unique TCP/IP address identifiers to be created, now that we’ve run out of the 4.3 billion created with IPv4. This is one of the main reasons why IPv6 is such an important innovation for the Internet of Things (IoT).

Why would you recommend using NAT in an IPv6 network?

NAT was designed and deployed (widely deployed) in order to cope with the scarcity of free IPv4 addresses. Without NAT, the IPcalypse would have already destroyed civilization (or triggered IPv6 actual usage, maybe).

Why subnetting is required?

Why is subnetting necessary? Because an IP address is limited to indicating the network and the device address, IP addresses cannot be used to indicate which subnet an IP packet should go to. Routers within a network use something called a subnet mask to sort data into subnetworks.

How does subnetting work with IPv6?

IPv6 addresses use 128 bits to represent an address which includes bits to be used for subnetting. The second half of the address (least significant 64 bits) is always used for hosts only. Therefore, there is no compromise if we subnet the network. 16 bits of subnet is equivalent to IPv4’s Class B Network.

What are the purposes if any of using NAT with IPv4?

The idea of NAT is to allow multiple devices to access the Internet through a single public address. To achieve this, the translation of a private IP address to a public IP address is required.

Why do we need NAT technology in the router?

The main use of NAT is to limit the number of public IP addresses an organization or company must use, for both economy and security purposes. The most common form of network translation involves a large private network using addresses in a private range (10.0. 0.0 to 10.255. This is where NAT comes into play.