[U-Boot] [PATCH 00/28] Add link-local addressing support

[Stefano Babic]

On 20/01/2012 01:53, Joe Hershberger wrote:
> Link-local support allows the bootloader to get a usable network address
> regardless of network environment.  Given that bootloaders may not always
> have access to a DHCP server, this functionality makes accessing it in
> those environments easier.  It is also referred to as zero-configuration IP.
> 

Hi Joe,

I have a basic question about your patchset. RFC3927 requires that
addresses are continuosly checked to avoid conflicts - this is a strict
requirement.

However, it is clear we cannot comply with this requirement. The
protocol runs once and there is not a background process to check for
conflicts.

I can imagine we can get conflicts, when several targets are running at
the same time in u_boot and they are attached to a network where
local-link addressing is active. Then we can have two or more system
using the same ip address, making the network unreliable.

Which are the limitations of this implementation ? They should also
described in your patchset, maybe with a README file. Is is thought to
connect the target directly to a PC ?

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================