Re: [lwip-users] 2 Interfaces

[Simon Goldschmidt]

Fabian Cenedese wrote:
> I have a device with 2 Ethernet interfaces. Can I have two
> "instances" of lwip to handle those?

Not unless you use a full-blown OS that can give the 2 instances seperated 
address spaces. In other words, the answer is possibly "no, you can't".

> My problem is that both
> are equal and should allow the same functionality. E.g. it
> should be possible to have handlers that listen on the same
> (UDP) port for each interface. But lwip can obviously only
> have one handler. Or with sockets, there's no way to specify
> an interface if I have two sockets listening on the same port
> and the same IP addresses.


You can't do this on the same IP address. To do this with lwIP, you need to 
give each netif a dedicated IP address.


Simon