Content #
0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
| Version | IHL | Type of Service | Total Length | ||
| Identification | Flags | Fragment Offset | |||
| Time to Live | Protocol | Header Checksum | |||
| Source Address | |||||
| Destination Address | |||||
| Options | Padding | ||||
Class A, B, and C private IP addresses Class D multicast IP addresses Class E reserved IP addresses Address 0.0.0.0
不可能的源地址(Impossible Source Addresses) 不可能的目标地址(Impossible Destination Addresses)