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From: Matthew Rezny <matthew@reztek.cz>
To: Lyndon Nerenberg <lyndon@orthanc.ca>
Subject: Re: BSD XXI Manifesto [mDNS proposal]
Date: Fri, 28 Feb 2014 00:59:15 +0100
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On Thursday 27 February 2014 14:55:55 Lyndon Nerenberg wrote:
> On Feb 27, 2014, at 12:20 PM, Matthew Rezny <matthew@reztek.cz> wrote:
> > If IPv4LL is in active use, the DHCP
> > client should continue to periodically look for a DHCP server and obtain a
> > lease without manual user intervention (which is unfortunately required on
> > both OS X and Windows, leading to sub-optimal experience in cases of
> > temporary unavailability of the DHCP server).
> 
> That's not true for Mac OS.  If you have an interface configured to use
> DHCP, and the Mac is unable to renew the lease, it will automatically
> configure a 169.254.x.y address on the interface.  All the while it
> continues its attempts to renew the DHCP lease and, once successful,
> removes the 169.254.x.y address from the interface.
> 
> --lyndon

If they corrected that, it was after I abandoned the platform years ago. I 
remember repeatedly pushing the Renew Lease button in the Network section of 
System Settings in frustration, waiting to see the address change.