What is the difference between IPv4 and IPv6?

Hello Friends, In this blog post(What is the difference between IPv4 and IPv6) I am going to let you know about the difference between IPv4 and IPv6.

In this blog post(What is the difference between IPv4 and IPv6), we are going to discuss Which is faster IPv4 or IPv6? What is the difference between IPv4 and IPv6? Which is more secure IPv4 or IPv6?

What is the difference between IPv4 and IPv6:

Which is faster IPv4 or IPv6?

To see and analyze the speed of both protocols many experiments were done and it was found that they both have similar speeds.

But occasionally IPv4 became faster than IPv6. However, according to the theory, IPv6 should be a little faster than IPv4 as the cycle doesn’t have to be wasted on net translation.

What is the difference between IPv4 and IPv6?

The main difference between IPv4 and IPv6 is that IPv4 supports 32-bit address space for the internet whereas IPv6 supports 128-bit address space for the internet.

Which is more secure IPv4 or IPv6?

It is not worth comparing the security of these addressing protocols.

Both are secure enough as IPsec provides the security that authenticates and encrypts the data over the network layer.

A network using either IPv4 or IPv6 will be secure. So it is meaningless to discuss the security comparison of both protocols.


In IPv4, Source and destination addresses are 32 bits(4 bytes) in length whereas in IPv6 Source and destination addresses are 128 bits(16 bytes) in length

In IPv4, IPsec support is optional whereas in IPv6 IPsec support is required

The IPv4 header does not identify packet flow for QoS handling by routers, whereas the IPv6 header contains a flow label field, which identifies packet flow for QoS handling by routers.

In IPv4, Both routers send host fragment packets, whereas, in IPv6 only the sending host fragment packets, routers do not.

In IPv4, the Header includes a checksum, whereas In IPv6 header does not include a checksum.

In IPv4, the header includes an option, whereas in IPv6 all optional data is moved to IPv6 extension headers.

In IPv4, address resolution protocol(ARP) uses broadcast ARP Request frames to resolve an IP address to a link-layer address.

Whereas In IPv6 Multicast neighbor solicitation messages resolve IP addresses to link-layer addresses.

In IPv4, the Internal group management protocol(IGMP) manages membership in local subnet groups whereas in IPv6 multicast listener discovery(MLD) messages manage membership in local subnet groups

In IPv4 ICMP routers discover is used to determine the IPv4 address of the best default gateway and it is optional.

Whereas in IPv6 ICMPv6 router solicitation and router advertisement messages are used to determine the IP address of the best default gateway and they are required.

In IPv4, Broadcast addresses are used to send traffic to all nodes on a subnet, whereas IPv6 uses a link-local scope of all-nodes multicast addresses.

IPv4 must be configured either manually or through DHCP. Whereas IPv6 does not require manual configuration or DHCP.

IPv4 Uses host address(A) resource records in the domain name system(DNS) to map hostnames to IPv4 addresses.

Whereas IPv6 uses host addresses(AAAA) resource records in DNS to map hostnames to IPv6 addresses.

IPv4 uses pointer(PTR) resource records in the IN-ADDR. ARPA DNS domain to map IPv4 address to hostname.

Whereas IPv6 uses pointer resource records, in the IPv6. ARPA DNS domain to map IPv6 addresses to hostnames.

IPv4 must support a 576-byte packet size (Possibly fragmented), whereas IPv6 must support a 1280-byte packet size(without fragmentation)

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Conclusion:

Using this blog post(What is the difference between IPv4 and IPv6) we have gone through Which is faster IPv4 or IPv6, What is the difference between IPv4 and IPv6, and Which is more secure IPv4 or IPv6. IPv4 supports 32-bit address space on the internet, whereas IPv6 supports 128-bit address space in the network.

In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.

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Anurag

I am a blogger by passion, a software engineer by profession, a singer by consideration and rest of things that I do is for my destination.