Gentoo Archives: gentoo-user

From: Mick <michaelkintzios@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] eth0 fallback configuration is ignored
Date: Mon, 29 Oct 2007 12:30:36
Message-Id: 200710290752.04830.michaelkintzios@gmail.com
In Reply to: Re: [gentoo-user] eth0 fallback configuration is ignored by Dan Farrell
1 On Sunday 28 October 2007, Dan Farrell wrote:
2 > On Sun, 28 Oct 2007 12:19:13 +0000
3 >
4 > Mick <michaelkintzios@×××××.com> wrote:
5 > > On Saturday 27 October 2007, Dan Farrell wrote:
6 > > > On Sat, 27 Oct 2007 21:58:11 +0930
7 > > >
8 > > > Iain Buchanan <iaindb@××××××××××××.au> wrote:
9
10 > > > This behaviour is called APIPA (Automatic PRivate IP Addressing)
11 > > > (from /etc/conf.d/net.example):
12 > > > # APIPA is a module that tries to find a free address in the range
13 > > > # Automatic Private IP Addressing (APIPA)
14 > > > # use APIPA to find a free address in the range
15 > > > # 169.254.0.0-169.254.255.255
16 > > >
17 > > > It provides DHCP-like functionality without a DHCP server. Pretty
18 > > > useless, unless you use it to configure all your IPs or a route for
19 > > > that subnet.
20 > >
21 > > Even worse, if your DHCP server comes up later, your PC will still
22 > > hold on to APIPA - not sure how this feature can be of any use to be
23 > > honest, but most devices these days from MS Windows to PDAs tend to
24 > > behave like this.
25
26 Let me correct myself here: my Gentoo boxen behave like this. A WinXP that I
27 tested for this purpose does not. It comes up with the APIPA address and
28 when a router becomes available in the network later on, it readily obtains a
29 dhcp address and drops the APIPA. Any idea how to configure Gentoo to do the
30 same?
31
32 > I was also wondering what kind of useful purpose this would serve. I
33 > am guessing that it would be enough for a network on one broadcast
34 > domain, if there is no need for any routing information.
35
36 I am guessing that it is a way of getting two computers talking to each other
37 when they find themselves connected, but without a router?
38 --
39 Regards,
40 Mick

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Replies

Subject Author
Re: [gentoo-user] eth0 fallback configuration is ignored Dan Farrell <dan@×××××××××.cx>
Re: [gentoo-user] eth0 fallback configuration is ignored Mark Shields <laebshade@×××××.com>