Summary of Header Changes

• Revised

  • Addresses increased 32 bits -> 128 bits
  • Time to Live -> Hop Limit
  • Protocol -> Next Header
  • Type of Service -> Traffic Class

• Streamlined

  • Fragmentation fields moved out of base header
  • IP options moved out of base header
  • Header Checksum eliminated
  • Header Length field eliminated
  • Length field excludes IPv6 header
  • Alignment changed from 32 to 64 bits

• Extended

  • Flow Label field added

Notes: