LwIP
ARP_AGE_REREQUEST_USED_UNICAST is only used within LwIP.
 
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CodeScopeSTM32 Libraries and SamplesLwIPARP_AGE_REREQUEST_USED_UNICAST

ARP_AGE_REREQUEST_USED_UNICAST macro

Re-request a used ARP entry 1 minute before it would expire to prevent

Syntax

#define ARP_AGE_REREQUEST_USED_UNICAST (ARP_MAXAGE - 30)

References

LocationText
etharp.c:66
#define ARP_AGE_REREQUEST_USED_UNICAST (ARP_MAXAGE - 30)
etharp.c:761
} else if (arp_table[arp_idx].ctime >= ARP_AGE_REREQUEST_USED_UNICAST) {