thank.
My system is based on PPP, so there is no ARP_QUEUEING, and ethernet ..,. The first package lost is normal, because the ping package never send out, am I right?
On Wed, Apr 15, 2009 at 9:17 PM, Ceresoli Luca
<address@hidden> wrote:
yueyue papa wrote:
> I use lwIP ping implelent. I found a strange thing, the ping always lost
> for first pacakge.
It would be normal for an outgoing PING if ARP_QUEUEING==0, and for an incoming PING if ARP_QUEUEING==0 and ETHARP_TRUST_IP_MAC==0.
In those cases, for the first packet sent to an IP address there is no ARP cache entry, and the packet would be discarded.
Luca
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