dhcpcd-discuss

On 23/10/2014 22:35, David Hauck wrote:
>> The scenario is the same regardless of C1/C2.
>>
>> Plug cable in.
>> DHCP starts
>> If after 5 seconds we have not obtained a working lease, IPv4LL
>> negotiation will start. The difference is that now the DHCP
>> negotiation will continue alongside IPv4LL whereas previous it was stopped and then restarted.
> 
> Is there anything different wrt to state sequence? For example, what will the state transitions be when IPV4LL is negotiated but then a DHCP session is started (is the IPV4LL STOPPED first?)? I'm interested in what the DHCP hook state transition sequence will look like.

It may look like this

PREINIT
CARRIER
REBOOT
NOCARRIER
EXPIRED
CARRIER
IPV4LL
BOUND

When any non IPv4LL address is BOUND, the IPv4LL state is terminated.
Easier to think of IPv4LL being another DHCP state transition really
(and this was the case anyway).

The below example this is a valid transition where the DHCP server went
down and didn't get back up until the DHCP lease had already expired.

BOUND
RENEW
REBIND
IPv4LL
BOUND

Does this help explain it?

Roy