What’s The Difference Between IPv4 and IPv6 ?

Difference Between IPv4 and IPv6

As an avid internet user, one is bound to have come across the terms IPv4 and IPv6 along with the debate about why the world needs to shift over to IPv6. An average joe at this point probably knows about the debate and why the jump is needed, but what exactly is the difference between the 2 protocols ?

Back Story

IPv4 today, is one of the core protocols of standard based inter-networking methods in the internet. It was initially deployed along with ARPANET back in 1983. IPv4 as we know has a limit to the number of address with the ceiling being hit at 4.3 billion addresses owing to addresses in it being in 32-bits. While 4.3 billion was a lot when it was deployed, the internet has gone through a volcanic eruption of devices in the era of the smartphone. The number of devices capable of connecting to the internet were restricted to Personal Computers until the year 2000 and 4.3 billion addresses was more than enough for all the computers in the world. With the availability of the smartphone however, every person now owned at least 2 devices that could connect to the internet thus doubling the number of addresses needed almost instantly.

With this boom of internet usage, also came the very real demand of more IP address and that’s when the world truly understood the need for IPv6. While IP address were limited to being four 1 byte numbers in IPv4, the newer version used 128 bits for IP address thus making them go from ( to (fe80::d4a8:6435:d2d8:d9f3b11). Even a layman can see the vast increase in the number of characters available and more characters means more addresses.

The Differentiation

This was the basic stuff that everyone knows but that’s not all there is when we talk about difference. IPv4 used Dynamic Host Configuration Protocol (DHCP) to configure an IP address every time it connects to the world wide web. IPv6 supports a revised DHCPv6 protocol that supports stateful auto-configuration, and supports stateless auto-configuration of nodes. This type of configuration utilizes router advertisements to generate a unique address. This ability creates a plug and play type of environment, where one can simply connect to the web and the address will be automatically generated on the go.  There is a lot more differences between the two protocol version that we have listed below

IPv4 IPv6
 Packet size : 576 bytes required, fragmentation is optional  Packet size : 1280 bytes required fragmentation not needed
 Packet fragmentation : Routers and sending hosts   Packet fragmentation : Sending hosts only
IPv4 was not designed with the intention of security
– Originally designed for an isolated military network
– Then adapted for a public educational & research network
 IPv6 was designed ground up with strong security
– Encryption
– Authentication
 IPv4 header has 20 bytes.
IPv4 header has many fields (13 fields)
  IPv6 header is the double, it has 40 bytes.
IPv6 header has fewer fields, it has 8 fields.
 ISP have IPv4 connectivity or have both IPv4 and IPv6   Many ISP don’t have IPv6 connectivity
 Non equal geographical distribution (>50% USA)   No geographic limitation
Delwyn Pinto

A person proud to have an alternate view

Recent Posts

Apple’s New Patent Hints At In-Display Selfie Camera

Next Apple iPhone may have a hole in its display, patent reveals Apple who started the “notch” design standard that…

9 hours ago

Cloudflare launches its DNS service for Android and iOS smartphones

Cloudflare's privacy-focused DNS service now available on iOS and Android Earlier this year, Cloudfare Inc., a website performance and…

9 hours ago

NVIDIA unveils the Quadro RTX 4000 GPU with 2,304 CUDA Cores, 8GB GDDR6 memory

NVIDIA announces mid-range Quadro RTX 4000 with Turing GPU, 2304 Cores and 8 GB VRAM NVIDIA announced its new Quadro RTX 4000…

12 hours ago

Facebook is the least-trusted major tech company- study

Facebook Is the Least Trusted Major Tech Company Among Americans For Protecting Personal Data, Suggests Polls Facebook, the social networking…

1 day ago

10 Best Free Sports Streaming Sites

A majority of people still rely on either cable or satellite-based television services for watching live sports or for streaming. Surprisingly there…

1 day ago

How to create your own WhatsApp stickers on Android smartphones

Create your own custom stickers for WhatsApp, here’s how WhatsApp, the Facebook-owned instant messaging platform, had last week rolled out a new feature…

2 days ago