[xubuntu-users] Wireless + wired connection

[Charlie Kravetz]

On Sat, 2008-01-26 at 10:57 +0100, Nicolas Ferré wrote:
> Charlie Kravetz a écrit :
> > On Wed, 2008-01-23 at 10:41 +0100, Nicolas Ferré wrote:
> >> Hi,
> >>
> >> I installed Xubuntu on my laptop a month ago and there is something
> >> bothering me. At work, I have a wired internet connection I set up
> >> manually. At home, I have a wireless connection in roaming mode. Every
> >> time I change my place, at start, Xubuntu complains about my hostname
> >> not defined explicitly in /etc/hosts. Each time, I add it to /etc/hosts
> >> but it get lost when I change my place !

< snip >

> Hi,
> 
> I just connected at home (in wireless/roaming mode), and here is my 
> /etc/hosts file:
> 
> 127.0.0.1 localhost
  This address and hostname is used by Ubuntu 7.10 and thus can not be
changed by the user

> 127.0.1.1 zeeman.up.univ-mrs.fr
            ^^^^^^
  This should be the hostname of this computer

> # The following lines are desirable for IPv6 capable hosts
> ::1 ip6-localhost ip6-loopback
> fe00::0 ip6-localnet
> ff00::0 ip6-mcastprefix
> ff02::1 ip6-allnodes
> ff02::2 ip6-allrouters
> ff02::3 ip6-allhosts
> 
> Actually, last time I boot, I manually added zeeman as an alias to 
> 127.0.0.1 and 127.0.1.1, but something (network manager ?) overwrote my 
> /etc/hosts at start ! It seems xubuntu complains when the "zeeman" alias 
> is not set.
> 
> By the way, I looked at the /var/log/messages file and found the following:
> Jan 26 10:40:59 zeeman kernel: [   27.656000] ADDRCONF(NETDEV_UP): eth1: 
> link is not ready
> Jan 26 10:41:09 zeeman kernel: [   37.736000] audit(1201340469.294:3): 
> type=1503 operation="inode_permission" requested_mask="a" 
> denied_mask="a" name="/dev/tty" pid=5232 profile="/usr/sbin/cupsd"
> Jan 26 10:41:19 zeeman kernel: [   47.860000] apm: BIOS not found.
> Jan 26 10:41:20 zeeman kernel: [   48.936000] Failure registering 
> capabilities with primary security module.
> Jan 26 10:41:20 zeeman dhcdbd: Started up.
> Jan 26 10:42:01 zeeman dhcdbd: message_handler: message handler not 
> found under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.reason
> Jan 26 10:42:13 zeeman kernel: [  102.032000] NET: Registered protocol 
> family 17
> Jan 26 10:42:17 zeeman kernel: [  105.424000] ADDRCONF(NETDEV_CHANGE): 
> eth1: link becomes ready
> Jan 26 10:42:19 zeeman dhcdbd: message_handler: message handler not 
> found under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.host_name
> Jan 26 10:42:19 zeeman dhcdbd: message_handler: message handler not 
> found under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.domain_name
> Jan 26 10:42:19 zeeman dhcdbd: message_handler: message handler not 
> found under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.nis_domain
> Jan 26 10:42:19 zeeman dhcdbd: message_handler: message handler not 
> found under /com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.nis_servers
> 
> Has someone some ideas about what it means ?
> 
> -- 
> Nicolas Ferré
> Laboratoire Chimie Provence
> Université de Provence - France
> Tel: +33 391282733
> 
The messages are referring to _eth1_, which should be your _wired
connection_. If you are connecting in wireless mode with the wired
connection disconnected, those are to be expected. I think (someone
correct me if I am wrong) we can disregard those messages unless the
wired connection is active.

Are all your home systems using the same setup (dhcp) to connect to each
other? 

This is the full /etc/hosts file from my own setup:

127.0.0.1 localhost
127.0.1.1 number3
192.168.51.1	whynot.keepingdreams.org	whynot
192.168.51.2	justhaveto	justhaveto
192.168.51.3	ucandoit	ucandoit
192.168.51.4	wecan	wecan
192.168.51.5	number3	number3


# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

As you can see, I have used static addresses for my home systems. I use
a second network card in the server to connect to my router using dhcp,
so it does not need to have the address and hostname in /etc/hosts.

good luck,

-- 
Charlie Kravetz 
Linux Registered User Number 425914            [http://counter.li.org/]
Never let anyone steal your DREAM.           [http://keepingdreams.com]