system-config-network & Zeroconf

Lennart Poettering mzerqung at 0pointer.de
Sat Mar 8 12:12:27 UTC 2008


On Sat, 08.03.08 00:36, Callum Lerwick (seg at haxxed.com) wrote:

> On Wed, 2008-03-05 at 18:06 -0500, Dan Williams wrote:
> > The problem is that some people want DHCP on their WLAN adhoc
> > networks... I still need to figure out how the Apple connection sharing
> > works; they use IPv4 LL addresses in the created Ad-Hoc network but I
> > don't know how other machines get the default route to the one sharing
> > its connection.  Possibly the router announces itself with Avahi or
> > something.
> 
> The connection sharing box provides DHCP.

Uh? You claim Apple assigns IPv4LL addreses via DHCP? Or are you
saying Dan is wrong in that they use IPv4ll addresses?

> > There does need to be more thought here; but I'm leaning towards
> > defaulting connections created when the user explicitly shares an
> > existing connection (ie, you pick "Share this mobile broadband card over
> > wireless") to zeroconf.  In the end there will still be booleans in the
> > config to mark DHCP yes/no and zeroconf yes/no.  I'm wondering if the
> > zeroconf option should be mutually exclusive with any of the others; ie
> > would you ever want to have a secondary IPv4 LL address at the same time
> > as you have a non-LL address.
> 
> Has ANYONE here actually read rfc3927? Link local means just that, link
> local. Read the second paragraph of the abstract, and section 2.7 and
> 2.8, titled "Link-Local Packets Are Not Forwarded" and "Link-Local
> Packets are Local".

You know, when I implemented RFC3927 in avahi-autoipd I of course
didn't read it the spec. Instead I just made something toally random
protocol up and afterwards claimed it actually was RFC3927. But psst,
don't tell anyone!

Lennart

-- 
Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net         ICQ# 11060553
http://0pointer.net/lennart/           GnuPG 0x1A015CC4




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