Re: [lwip-users] Problems on Class-B network

[Sergio R. Caprile]

Stephen,
there is no concept of IP class in lwIP, and the IP addressing scheme 
you mention is a /23; closer to a class-C than a B ;^)
What you describe sounds pretty strange to me too, looks like your 
customer is not well versed in networking or doing some tricky stuff. 
Either way, you should be able to replicate a problem given the network 
configuration, if you don't... there is a high likelihood that they are 
not doing things right.