IPv4 and IPv6

IP Options

Vers

4

IHL

Type of

Service

Total Length

Identification

Flags

Frag Offset

Time to

Live

Protocol

Header Checksum

Source Address

Destination Address

Source Address

Destination Address

Payload Length

Hop Limit

Next Hdr

Flow Label

Traffic

Class

Vers

6

v4 Header = 20 Bytes + Options

v6 Header = 40 Bytes

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