[lwip-users] About DHCP

[Alain Mouette]

I am usin DHCP for the first time, and there is something that I don't 
understand:

Once I call
  netifapi_dhcp_start(&lwip_netif);

- Does it keep on running forever?
- Will it bring the interface up even if it takes days for a dhcp server 
to be available?
- Should I / Could I bring it down and up again?
- Will it refresh dhcp periodicaly? (I don't really understand why is this)
- How do I know that it was refreshed and if something changed?

Any help is appreciated, I could not find good tutorials about this :(

Thanks,
Alain