RE: [lwip-users] pbuf_header fails in etharp_output

[Goldschmidt Simon]

> lwIP is a little bit cheeky and reuses the pbuf with the ICMP 
> request to form the ICMP reply.  It is therefore assuming 
> that there is room at the front for the necessary headers.  I 
> suppose if your ethernet driver was being very efficient and 
> had stripped off the ethernet header before creating the 
> pbuf, this might not be the case.  Can you show how you're 

If that's the case, it should be changed so that etharp can add
a PBUF_RAM in front. To me such a driver seems a good idea
for low memory targets (if you don't want to pass received IP
frames through etharp).

Simon