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

[Bill Auerbach]

Follow-up Comment #5, task #10446 (project lwip):

Hmmm, I misunderstood that you liked the feature that if DHCP fails that
AutoIP will use (by the user calling a function) a static IP address.  We use
this because it allows falling back to a known address so that the device can
be pinged, tested and still accessed (on the same static subnet).  If it falls
back to true AutoIP, the IP address isn't known.

This is a common situation if you have 2+ NICs in the PC with the lwIP
devices on a switch on one NIC (without DHCP).  If the devices fall back to
static addresses on the subnet of the NIC with DHCP, the devices are
accessible.

I don't have to provide a patch for this - it's OK. I have functionality I
needed without watching a timer and setting a static IP manually in my
application code.  There is less code now letting AutoIP fall back to a static
address and I can easily configure my device to fall back to a normal AutoIP
address.

I will supply a patch for detecting that the address is AutoIP and not DHCP.

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