[systemd-devel] [PATCH] sd-dhcp: implement IPv4 link-local support

[Tom Gundersen]

On Thu, Feb 27, 2014 at 11:28 PM, David Timothy Strauss
<david at davidstrauss.net> wrote:
> This is a lot of code, and this approach is largely obsoleted by
> link-local IPv6 addressing, which also has the benefits of being
> simpler, deterministic (at least with RFC 4862), and collision-proof.
> Both Apple [1] and Microsoft [2] prefer IPv6 link-local as the best
> practice.
>
> Is it really that important to support self-assigned IPv4?

While IPv6 link-local is nice, if the other devices on your local
network only support ipv4 it won't do you much good. So I think this
is something we definitely need to support out of the box. Moreover,
the fact that people (Axis in this case) are still shipping products
using this, probably means it will stay with us for quite some time.

Cheers,

Tom

> [1] https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/NetServices/Articles/about.html
> [2] https://blogs.technet.com/b/jlosey/archive/2011/02/02/why-you-should-leave-ipv6-alone.aspx
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