Re: [lwip-users] Lwip with router

[Sergio R. Caprile]

I assume you already checked as Dirk's suggestion. If in doubt, please 
post your lwip initialization code. From your description I assume your 
netif sort of works, so:

Did you happen to try pinging ? First local, then routed.
Did you correctly set the networks ?
It might have worked by chance and now it does not because it shouldn't.
Would you care to share your setup, who connects to whom, and proper 
wireshark capture files to analyze the problem ? You might need a hub on 
the router-lwip connection to get a capture.