Difference Between IPv4 and IPv6

Characteristics	IPv4	IPv6
Deployed	1981	1999
Address Size	It uses 32 bit addresses	It uses 128 bit addresses.
Address Format	Dotted Decimal Notation: 192.168.1.1	Hexadecimal Notation: FFFE:F200:3204:0B00: 0122:4555:8001:AB00
Prefix Notation	192.168.1.1/24	2FFE:0200:6234::/48
Number of Addresses	232= ~4,294,967,296	2128 = ~340,282,366, 920,938,463,463,374, 607,431,768,211,456
Compatibility	It is less compatible to mobile networks.	It is much compatible to mobile networks.
Uses	It is used in 99% of the networks.	It is used only in remaining 1% of networks.
Checksum	Checksum field is available in header	Checksum field is not available in header.
Optional Fields	Options field is available	No options field available
Protocol	It uses Address Resolution Protocol (ARP) to map IP addresses to MAC addresses.	It uses Neighbor Discovery Protocol instead of ARP.
	Internet Group Management Protocol (IGMP) is used to manage multicast group membership.	It uses Multicast Listener Discovery (MLD) messages instead of IGMP.
Message Broadcast	Message Broadcast is available.	Message broadcast is available Instead a link-local scope all-nodes multicast address is used for broadcast.
Fragmentation	Done by sender and forwarding routers.	Done only by the sender
Packet Flow Identification	Not available	Available using Flow Label Field.