Re: DHCP fall back to link-local? (IPv4)

[Dan Williams <dcbw redhat com>]

On Fri, 2009-04-17 at 09:16 +0100, Marc Herbert wrote:
> >> If you have a DHCP server, but it's down, falling back to IPv4LL 
> >> doesn't get you anywhere.
> > 
> > ... and NOT falling back does not get you anywhere either. So here it 
> > does not make much difference.
> 
> After thinking about it, this is actually not true. Even in the "DHCP 
> down" case a fallback to link local is useful.
> 
> There are more and more peer to peer applications out there and you 
> typically want both external connectivity AND reach your .local 
> neighbours. A failure of the former should not imply a failure of the latter.
> 
> Even when your DHCP server is down, you still want to pull fresh code 
> from your collegues' git repositories at work or stream video to your 
> Apple TV box at home.
> 
> 
> Anyway thanks for answering and making clear that NetworkManager is 
> designed not to have this feature any more. This avoids wasting time 
> looking for it.

I'm not opposed to it, I just think we do need to think through the
consequences of doing something like that, because it breaks stuff
including user expectations.

Dan