Re: [lwip-users] Passing ARP replies to host

[address@hidden]

On 05.11.2018 16:35, Amena El Homsi wrote:
> LwIP processes the ARP requests and replies updated the ARP table, 
> then it calls pbuf_free().
> Is there a way to send the ARP reply to the host when the host 
> requested lwIP to send an ARP request?

No.

> I was thinking to use raw pcb and define a raw callback function that 
> will inform the host of the result of the ARP request, however 
> raw_input() is not called unless ip4_input is called and since the arp 
> will be processed by etharp_input I will not be able to use raw_pcb.

As you have found out yourself, raw pcbs are raw IP pcbs, not raw 
network packets. It's like that in the socket world...

Simon