[lwip-devel] [bug #29072] DHCPDISCOVER doesn't have ciaddr == 0

[Bill Auerbach]

Follow-up Comment #13, bug #29072 (project lwip):

lol :-) I know I digressed into Link-Local Addressing (LLA) but this RFC for
LLA *does* add constraints on DHCP.  Since we support LLA (compliant or not)
don't we now fall under RFC3927's DHCP provisions when LLA is enabled?

I believe because the netif is used to build the packet header with current
netif parameters that if an IP address is changed on the netif it will break
open connections.

Perhaps the pcb should also be passed to lower levels to get *its*
time-of-connection IP address and only use the netif for the MAC address.  Or
put a hwaddr pointer in the PCB and pass a pcb instead of a netif (this hwaddr
cannot change and can be taken from the netif at creation.  (I think)

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