> In the web http://lwip.scribblewiki.com/LwIP_version_1.3.0_release_notes, > about arp, it's a message: > > LWIP_ARP option in lwipopts.h. ARP can now be disabled completely. > > According to my understanding, arp can be disabled by setting LWIP_ARP = 0 > in lwipopts.h just like LWIP_UDP、LWIP_TCP > and so on. I have chaged code in the enthernetif.c that it can be work in my > target board. if setting LWIP_ARP = 1, LWIP works well, > but if setting LWIP_ARP = 0, it is a lot of error. > > So, I want to ask what's the mean about the message in above web! how can > I do when I want to set LWIP_ARP = 0? "ARP can now be disabled completely" meany if you only use interfaces like PPP or loopback that don't need ARP, you can set LWIP_ARP to 0 to prevent the code from being linked into your application. This means if you don't use ethernet (which *needs* ARP!!!), you can now have smaller code. Of course this doesn't mean that you can disable ARP when using ethernet interfaces! ARP is always needed for those. Simon
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