Re: [lwip-users] LWIP_1.4.1 DHCP not working.

[Sergio R. Caprile]

I don't know in the API you are using, nor with NO_SYS != 1, but with 
RAW API and NO_SYS=1, in 1.4.1, I don't set the netif up, DHCP does, and 
I have to check for (netif->dhcp->state == DHCP_BOUND) before using the 
netif.
In 2.0+ yes, the "up" is administrative and you set the ifc up before 
starting DHCHP. (However, this might not be relevant, what IMHO is 
important is to wait for DHCP to say "supper's ready").