IPv4 vs IPv6 | Know the Difference Between Two Most Popular IP Versions


As we know the Internet of Things (IoT) keeps on developing exponentially, more gadgets associate online day by day. There has been dread that, sooner or later, IP locations would simply run out. This guess is beginning to work out as expected.

Don’t have any fear; the Internet isn’t reaching to an end. There is an answer to the issue of lessening IPv4 addresses. We will give IP information on how more  IP addresses can be made, and plot the fundamental issues that should be handled to stay aware of the development of IoT by embracing IPv6.

We likewise look at how Internet Protocol version 6 (IPv6) versus Web Protocol 4 (IPv4) assumes a significant role in the Internet’s future and development, and how the more up to date form of the IP is better than IPv4.

How an IP Address Works

IP means “Internet Protocol,” or internet address portraying specific set rules which oversee how information packets are transmitted over the Internet. Data on the web or traffic streams across systems utilizing a unique IP. Each gadget associated with the Internet or PC gets a numerical name relegated to it, an IP address that is utilized to distinguish it as a point for correspondence.

Your IP distinguishes your gadget on a specific system. It’s I.D. in a specialized arrangement for systems that join IP with a TCP (Transmission Control Protocol) and empowers virtual associations between a destination and a  source. Without a special IP address, your gadget couldn’t endeavor correspondence.

IP addresses organize the manner in which various machines communicate with one another. They exchange information, which refers to exemplified bits of information that have a significant impact on stacking website pages, messages, emailing, and different applications which include information exchange.

Some of the components enable traffic to stream over the Internet. At the purpose of the beginning, information is bundled into an envelope when the traffic begins. This procedure is stated as a “datagram.” It is a parcel of information and part of the Internet Protocol or IP. A full system stack is required to move information over the Internet. The IP is only one piece of that stack. The stack can be separated into four layers, with the Application part at the top and the Datalink at the base.


  • Application – FTP, HTTP, SMTP, POP3
  • Transport – UDP, TCP
  • Networking – ICMP, IP
  • Datalink – ARP, Ethernet

As a client of the Internet, you’re most likely acquainted with the application layer. It’s one that you collaborate with every day. Whenever you need to visit a site; you type in https://[ temok.com], which is the Application.

Is it true that you are utilizing an email application? Eventually, at that point, you would have set up an email account in that application, and likely went over POP3 or SMTP during the design procedure. POP3 represents Post Office Protocol 3 and is a standard strategy for accepting an email. It gathers and holds an email for you until got.

From the above stack, you can see that the IP is a piece of the systems administration layer. IPs returned to reality in 1982. IPv1 through IPv3 were trial renditions. IPv4 is the primary form of IP utilized freely, the world over.

IPv4 Explained

IPv4 or aka Internet Protocol Version 4 is a widely utilized convention in information correspondence more than a few sorts of systems. It is the fourth modification of the Internet convention. It was created as a connectionless convention for utilizing in bundle exchanged layer systems like Ethernet. Its essential duty is to give intelligent associations to arrange gadgets, which incorporates giving ID to each gadget.

IPv4 depends on the best-exertion model, which ensures neither conveyance nor shirking of a copy conveyance and is procured by the upper layer transport convention, for example, the Transmission Control Protocol (TCP). IPv4 is adaptable and can naturally or physically be designed with a scope of various gadgets relying upon the sort of system.

Technology Behind IPv4

IPv4 is both determined and characterized in the Internet Engineering Task Force’s (IETF) distribution RFC 791, utilized in the bundle exchanged connection layer in OSI models. It utilizes an aggregate of five classes of 32-piece addresses for Ethernet correspondence: A, B, C, D, and E. Of these, classes A, B, and C have an alternate piece length for managing system has, while Class D is utilized for multi-throwing. The rest of Class E is held for some time later.

Class A Subnet Mask– or/8

Class B Subnet Mask– or/16

Class C Subnet Mask– or/24

For Example, The Network with a/16 subnet cover can utilize addresses going from to It’s imperative to take note of that the location is held uniquely for broadcasting inside the clients. Here, the IPv4 can dole out host delivers to a limit of 232 end clients. Moreover, the IP addresses keep a standard, decimal documentation group:

The above-mentioned number arrangement is an exceptional 32-piece IP location. This arrangement implies there can be up to 4.3 billion exceptional locations. Every one of the four gatherings of numbers is 8 bits. Every 8 bits are called an octet. Each number can run from 0 to 255. At 0, all bits are set to 0. At 255, all bits are set to 1. The binary type of the above IP address is 10101011.00011110.00000010.00000101.

Device types are far more than just desktops. Now there are smartphones, hotspots, IoT, smart speakers, cameras, etc. The list keeps proliferating as technology progresses, and in turn, so do the number of devices. Thus the need for unique and many IP addresses is increasing day-by-day.

Future of IPv4

IPv4 addresses are now running out of use, making IPv6 sending the main feasible arrangement left for the long-haul development of the Internet. In October 2019, RIPE NCC, one of five Regional Internet Registries, which is answerable for appointing IP delivers to Internet Service Providers (ISPs) in more than 80 countries, reported that just a single million IPv4 addresses were left. Because of these impediments, IPv6 has been presented as an institutionalized arrangement offering a 128-piece address length that can characterize up to 2128 hubs.

Recovered IPs might be doled out by means of a holding up list. That implies just a few hundred thousand of IPs can be apportioned every year, which isn’t almost enough to cover the few million that worldwide systems require today. The results are that system instruments will be compelled to depend on costly and convoluted answers for work around the issue of less accessible locations. The commencement to zero tends to implies endeavors worldwide need to check out IP assets, discover between time arrangements, and plan for IPv6 sending, to defeat the unavoidable blackout.

In the meantime, one well-known answer for connecting over to IPv6 organization is Carrier-Grade Network Address Translation (CGNAT). This innovation takes into consideration the prolonged utilization of IPv4 addresses. It does as such by permitting a solitary IP address to be conveyed across a huge number of gadgets. It just plugs the gap meanwhile as CGNAT can’t scale inconclusively. Each additional gadget makes another layer on NAT, that expands its outstanding burden and multifaceted nature, and accordingly raises the odds of a CGNAT fizzling. At the point when this occurs, a great many clients are affected and can’t be immediately returned on the web.

Another generally utilized workaround is IPv4 address exchanging. This is a business opportunity for selling and purchasing IPv4 addresses that are never again required or utilized. It’s an unsafe play since costs are directed by market interest, and it can turn into a confounded and costly procedure to keep up the state of affairs.

Know that the Internet will not break ever, however it is at a limit since systems will just think that its increasingly hard proportional framework for development. IPv4 depletion returns to 2012 when the  Internet Assigned Numbers Authority (IANA) apportioned the last IPv4 addresses to RIPE NCC. The since quite a while ago foreseen run-out has been anticipated by the specialized network, and that is the place IPv6 comes in.

What is IPV6?

Web Protocol Version 6 or IPv6 is the most current adaptation of Internet Protocol utilized for conveying information in bundles from one source to a goal through different systems. IPv6 is considered as an upgraded adaptation of the more seasoned IPv4 convention, as it bolsters an altogether bigger number of hubs than the last mentioned.

IPv6 permits up to 2128 potential mixes of addresses or nodes. It is likewise alluded to as the Internet Protocol Next Generation or IPng. It was first created in the hexadecimal organization, containing eight octets to give progressively considerable adaptability. Discharged on June 6, 2012, it was additionally intended to manage address broadcasting without incorporating communicate addresses in any class, equivalent to its forerunner.

Comparing the Difference Between IPv4 and IPv6

Now when you have sufficient knowledge on both versions IPv4 and IPv6 in detail, I can recapitulate differences within these two protocols in a table. Each has its benefits and deficits to offer.

Areas of Difference IPV4 IPV6
Mobile devices Compatibility Excessive usage of dot-decimal notations, that makes it less appropriate for the mobile networks. They utilize hexadecimal, colon-separated notations, that are way more suitable to handle mobile networks.
Mapping The Resolution Protocol is utilized to map the MAC addresses. The Neighbor Discovery Protocol is utilized in order to map the MAC Address.
Dynamic Host Configuration Server Clients have to approach Dynamic Host Configuration Servers when connecting to a network. Clients are provided with permanent addresses and they aren’t required to connect with any server.
Internet Protocol Security It is optional. It is mandatory.
Optional Fields Present Absent. Instead, extension headers are accessible.
Local Subnet Group Management Uses Internet Group Management Protocol or GMP. Uses Multicast Listener Discovery or MLD.
IP to MAC Resolution Broadcasting ARP. Multicast Neighbor Solicitation.
Address Configuration It is done by DHCP or manually. It utilizes stateless address autoconfiguration by the DHCP6 or Internet Control Message Protocol.
DNS Records Address (A) Records  (AAAA) Address Records
Packet Header Packet flow for QoS handling is not identified. This includes checksum options. Flow Label Fields specify packet flow for QoS handling.
Packet Fragmentation             Packet Fragmentation is allowed from routers when sending to hosts. For sending to hosts only.
Packet Size The minimum packet size is 576 bytes. Minimum packet size 1208 bytes.
Security It depends mostly on Applications. Has its own Security protocol called IPSec?
Mobility and Interoperability Network topologies are relatively constrained, which restricts mobility and interoperability. IPv6 provides mobility and interoperability capabilities which are embedded in network devices
SNMP Support included. Not supported.
Address Mask It is used for the designated network from the host portion. Not Used
Address Features Network Address Translation is used, which allows a single NAT address to mask thousands of non-routable addresses. Direct Addressing is possible because of the vast address space.
Configuration the Network Networks are configured either manually or with DHCP. It has autoconfiguration capabilities.
Routing Information Protocol Supports the RIP routing protocol. IPv6 does not support the RIP routing protocol.
Fragmentation It’s done by forwarding and sending routes. It is done only by the sender.
Virtual Length Subnet Mask Support Supports added. Support not added.
Configuration To communicate with other systems, a newly installed system must be configured first. The configuration is optional.
Number of Classes Five Different Classes, from A to E. It allows an unlimited IP number to be stored.
Type of Addresses Multicast, Broadcast, and Unicast Anycast, Unicast, and Multicast
Checksum Fields Has checksum fields, for example Not present
Length of Header Filed 20 40
Number of Header fields 12 8
Address Method It is a numeric address. It is an alphanumeric address.
Size of Address 32 Bit IP Address 128 Bit IP Address

Pros and Cons of Using IPv6

IPv6 addresses have all the specialized weaknesses present in IPv4. The thing that matters is that it offers a 128 piece or 16-byte address, making the location pool around 340 trillion (undecillion).

It’s essentially bigger than the location size gave by IPv4 since it’s comprised of eight gatherings of characters, which are 16 bits in length. The sheer size underlines why systems ought to receive IPv6 in the near future. However, making a move so far has been an intense sell. System administrators discover working with IPv4 natural and are likely utilizing a ‘sit back and watch’ way to deal with conclude how to deal with their IP circumstance. They may think they have enough IPv4 addresses for the not so distant future. Be that as it may, staying with IPv4 will get dynamically harder to do as such.

A case of the benefit of IPv6 over IPv4 isn’t sharing an IP and getting a committed location for your gadgets. Utilizing IPv4 implies a gathering of PCs that need to share a solitary open IP should utilize a NAT. At that point to get to one of these PCs legitimately, you should set up complex arrangements, for example, port sending and firewall modifications. In contrast with IPv6, which has a lot of addresses to go around, IPv6 PCs can be gotten to openly without extra setups, sparing assets.

IPv4/IPv6 Coexistence

IPv4 and IPv6 subnets comprise and will keep on existing together even as the general Internet moves from IPv4 to IPv6. There are various mechanisms set up that encourage this. These incorporate Stateless IP/ICMP Translation (SIIT), 6rd, NAT, burrowing and intermediary server support. A large number of the strategies can be conveyed in firewalls and switches somewhere in the range of IPv4 and IPv6 subnets.

SIIT utilizes::/96 location and maps the 32-piece IPv4 to the lower bits of an IPv6 address. This permits direct access of IPv4 has by IPv6 hubs. The 6rd (IPv6 rapid organization) utilizes IPv6 to connect IPv4 subnets. It burrows the IPv4 bundle over IPv6. It is here and their assistance gave by ISPs. Intermediary servers with double stacks can work in either course giving IPv4 access to an IPv6 server and the other way around. Proxy servers will, in general, be a stopgap measure since every proxy must be explicitly arranged.

Obviously, this portrays that the entryway can interface with an IPv6 version. A large portion of the most recent business and buyer gadgets can do this however many old gadgets are IPv4 as it were. For this situation, an extra entryway is required so the IPv4 to IPv6 interpretation happens outside a client’s premises.

Double stack has probably going to be basic too. A system can convey IPv4 and IPv6 traffic simultaneously. A double stack host can speak with either sort of gadget just as having its traffic steered to the outside world if proper. Double stack switches can be entryways also.

Disappointingly, blended IPv4/IPv6 conditions are delicate and a significant number of the strategies won’t function admirably together. Join this with IPv4 expansions, for example, IPsec and different conventions and there is the likelihood that associations may be made however applications won’t work. The main likely blends that will function admirably will be IPv4-to-IPv4 and IPv6-to-IPv6.

One issue that should sit tight for another article is IPv6 security. In view of the distinctions and highlights of IPv6, firewalls and security programming need to address extra security gives that IPv4 didn’t. For instance, burrowing arrangements referenced prior can bring the more open IPv6 into an IPv4 organize. It is conceivable to forestall or relieve assaults thusly yet just if legitimate security arrangements are utilized and if the equipment bolsters this.

All in all, what happened to IPv5? IPv5 is an assignment for a variation of the Internet Stream Protocol (ST) that began in 1979 however relinquished. A considerable lot of the highlights of ST are found in Multiprotocol Label Switching (MPLS) standard. IPv6 depended on IPng (IP people to come) work and IPv6 was at first called IPng form 7.

Future of IPv6 Adoption

The future appropriation of IPv6 generally relies upon the number of ISPs and versatile transporters, alongside enormous undertakings, cloud suppliers, and server farms ready to move, and how they will relocate their information. IPv4 and IPv6 can coincide with parallel systems. Along these lines, there are no critical impetuses for elements, for example, ISPs to energetically seek after IPv6 choices rather than IPv4, particularly since it costs a lot of time and cash to redesign.

In spite of the sticker price, the computerized world is gradually moving ceaselessly from the more seasoned IPv4 model into the more productive IPv6. The long-haul benefits illustrated in this article IPv6 gives merit to the speculation.

Selection still has far to go, however, just it takes into consideration new potential outcomes for organizing setups on an enormous scale. It’s proficient and inventive, not to overlook it diminishes reliance on the inexorably testing and costly IPv4 showcase. Not getting ready for the move is shallow and dangerous for systems. Savvy organizations are grasping the proficiency, development, and adaptability of IPv6 at this moment. Be prepared for exponential Internet development and cutting edge out of this world on the web and improve your business. IPv4 depletion will prod IPv6 appropriation forward, so what are you sitting tight for? To discover how to embrace IPv6 for your business, call us today.

IPv4 vs. IPv6: Speed Comparison

You might be thinking that is IPv6 faster than the IPv4?

Well, the answer is, no. After testing the response time of multiple domains within different locations we found out that the IPv6 is a bit slower as compared to its predecessor version 4. Although, this difference is termed to be the only fraction of a sec that would not be noticeable by an ordinary user browsing through the web. When we conducted the speed test it was also revealed that the response time of these IPs might have been affected by their locations.


Oleg Kaluger

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2 Comments on “IPv4 vs IPv6 | Know the Difference Between Two Most Popular IP Versions”

  1. Oleg,

    Thanks for letting us know the difference between these 2 IP versions: ipv4 & ipv6. Your comparison is so detail and easy to follow.

  2. IPV4:

    IPV4 Internet (Protocol Version 4) is the fourth revision of the Internet Protocol (IP) used to identify devices on a network through an addressing system.

    IPV6 (Internet Protocol Version 6) is also called IPng (Internet Protocol next generation) and it is the newest version of the Internet Protocol (IP) reviewed in the IETF standards committees to replace the current version of IPv4 (Internet Protocol Version 4).

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