Message-ID: <5093F44D.8090103@arcor.de>
Date: Fri, 02 Nov 2012 17:26:53 +0100
From: Der Tiger <der.tiger.alpine@arcor.de>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1
Precedence: list
MIME-Version: 1.0
To: Natanael Copa <ncopa@alpinelinux.org>
CC: "alpine-devel@lists.alpinelinux.org" <alpine-devel@lists.alpinelinux.org>
Subject: Re: [alpine-devel] [Alpine 2.4] Network Interface Hotplugging Detection
References: <509147AC.8030105@arcor.de> <20121031205406.79aa5da2@ncopa-laptop.res.nor.wtbts.net> <509188C2.7080209@arcor.de> <20121101164021.49481c5f@ncopa-desktop.nor.wtbts.net>
In-Reply-To: <20121101164021.49481c5f@ncopa-desktop.nor.wtbts.net>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

ReHi Natanael,

>>>> AFAIK, link up and down events are usually handled by daemons like
>>>> ifplugd, netplugd or hotplug
>>> add dhcpcd to that list.
>> Didn't know that. That's, of course, a lead to follow. I'm going to
>> check the dhcpcd configuration, tomorrow.
> 
> I just remembered. I think you can run dhcpcd in 2 ways.
> 1) configure the interface as 'dhcp' in /etc/network/interfaces and let
>    busybox ifup it.
> 
> 2) remove all interfaces (maybe except lo) from /etc/network/interfaces
>    and then run dhcpcd as standalone. 'rc-service dhcpcd start'
>    and 'rc-update add dhcpcd'. dhcpcd will by default give all
>    interfaces a dhcp address on link detection. You can configure it to
>    ignore given interfaces, and set static ip address on link detect
>    in /etc/dhcpcd/dhcpcd.conf
> 
> I'm not sure if the link detection is enabled in mode #1 but i know for
> sure that mode #2 works.

I upgraded my system to Alpine 2.5 rc1 (kernel 3.6.4). Hotplugging is
now recognized by the kernel on both NICs, again. I suppose it has been
a kernel bug that caused the interfaces (at least the RealTek NIC) to
stay down after reconnecting the network cable.

I also tried the dhcpcd variant (mode #2 in your description above), but
was unable to assign two static ipv4 addresses as well as static ipv6
addresses to a single interface in /etc/dhcpcd.conf. From what I
gathered roaming the WWW, dhcpcd isn't able to handle neither static
ipv6 addresses, nor multiple ipv4 addresses on the same interface.

Anyway, since the ifup/ifdown (mode #1) is now working fine, I see no
reason to change to dhcpcd, even if dhcpcd would have been my preferred
mode.

Thanks for your help!

Kind Regards, Tiger


---
Unsubscribe:  alpine-devel+unsubscribe@lists.alpinelinux.org
Help:         alpine-devel+help@lists.alpinelinux.org
---