iPv4

• Has a 32-bit address length
• It supports manual and DHCP address configuration
• End-to-end connection integrity is unachievable
• Is a number address that consists of 4 fields which are separated by .
• It supports Virtual Length Subnet Mask (VLSM)
• Fragmentation is done by the senders and the forwarding routers
• It does not provide any mechanism for packet flow identification
• Checksum field is available
• It does not provide encryption and authentication
• Has 5 classes (A, B, C, D, E)
• Is broadcasting
• Address representation is decimal

iPv6

• Has 128-bit address length
• It supports manual, DHCP, auto-configuration and renumbering
• End-to-end integrity is achievable
• Is an alphanumeric address that consists of 8 fields which are separated by :
• Does not support VLSM
• Fragmentation is done by senders only
• Uses flow label field in the header for the packet flow identification
• No checksum
• Provides encryption and authentication
• No classes
• It is multicasting which provides efficient networks operation

• Address representation is hexadecimal