[En-Nut-Discussion] Network Link state on at91_emac and others

[Harald Kipp]

Thiago A. Corrêa wrote:
> On Tue, Sep 16, 2008 at 8:28 PM, Henrik Maier <hmlists at focus-sw.com> wrote:
>> Maybe the unplug behaviour is different if DHCP is enabled or not?
>>
>> With DHCP we are likely to get a new IP address and this prevents the
>> existing sockets to communicate after link has been restored.
>>
> 
> PC's usually add to the DHCP request their prefered IP address (the
> last one), so the server assigns it again if it's still available.
> Otherwise it get's changed.

In addition, the DHCP server will keep the IP/MAC relation until the 
lease expires or is explicitly released. Nice DHCP servers will even try 
to assign the same IP address after the lease expired.

Harald