Data Fields | |
struct uip_eth_addr | ethaddr |
the 48 bit MAC address | |
uint16_t | ipaddr [2] |
the IP (V4) address | |
uint8_t | time |
Time stamp and valid flag. |
An ARP entry.
This type describes the result of one address resolution. It is a relation of a MAC and an IP address plus a time stamp of when this relation was entered first or updated.
uint8_t time |
Time stamp and valid flag.
The time stamp of this MAC/IP address relation is in terms of a ARP tick. The tick time (hence the unit) is usually 10 s. A longer value may be chosen to get longer ARP timeouts by an 8 bit tick and this 8 bit time stamp.
The value 0 is neither used as tick nor (hence) as time stamp value. time
== 0 just means this entry is invalid.