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[lwip-devel] [task #10446] DHCP extensions for AutoIP


From: Bill Auerbach
Subject: [lwip-devel] [task #10446] DHCP extensions for AutoIP
Date: Tue, 15 Jun 2010 18:32:59 +0000
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729)

Follow-up Comment #3, task #10446 (project lwip):

Simon, if the user specifies AutoIP with fallback to a user-defined IP
address, the probing will still take place at this user-defined address.  If
there is a conflict, autoip_restart will increment this address and try again.
 I don't mind this as it prevents a potential IP address conflict.

OTOH, we could simply see that there is fallback to a static address, set the
netif IP address to the user-defined fallback and use dhcp_inform and be done
with it.  Naturally devices configured to the same fallback IP address will
conflict if both appear on a network.

I have it working with conflict avoidance and can prepare a patch unless you
prefer fallback to static can have conflicts.

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