[lwip-users] arp reply, no ping

[Chris Hiszpanski]

Hello,

Pinging LwIP, an ARP reply is sent from LwIP with the correct hardware 
address and ip address. However, ping replies are not sent by LwIP.

tcp_tmr() is called every 100ms.

Setting a breakpoint at ip_input, I verified that incoming packets are being 
copied from the CS8900A.

Setting a breakpoint in ipv4/ip.c at line 270 (inside ``if (netif == NULL) { 
...'') to check if a matching network interface was found for the received 
packet, I find that the breakpoint is reached -- no network interface 
matches my incoming ping packets.

I have added the network interface with netif_add and set it as the default 
with netif_set_default.

Any ideas as to why LwIP is not replying to pings?

Cheers,
Chris

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