[lwip-users] Re: [lwip] ARP

[John C. Toman]

Jibin George wrote:

>    Is lwip support ARP
>
Yes .. the latest CVS versions support it the best (at least for client 
applications which need ARP to determine where to connect to). The 
latest versions will send an ARP query and wait for the response, then 
send the original packet. Or timeout if the etharp timer is running. 
Versions 0.5.3 and earlier do not send the original packet after a query 
successfully completes; those versions depend on the application 
programmer to timeout on a response and resend, which can be troublesome 
for certain UDP protocols but generally isn't too much of a problem with 
TCP protocols.  See src/netif/etharp.c for the implementation.

John



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