Content #
| Expression | Description |
|---|---|
| checksum | Checksum of the IP header |
| daddr | Destination IP address |
| frag-off | Fragmentation offset |
| hdrlength | Length of the IP header, including options |
| id | IP identifier |
| length | Total length of the packet |
| protocol | Protocol in use at the layer above IP |
| saddr | Source IP address |
| tos | Type of Service value |
| ttl | Time to Live value |
| version | IP header version, which will always be 4 for IPv4 expressions |