Problem with wireless and ethernet: devices names not const

quentin.fr · n00b Joined: 27 Aug 2006 Posts: 47

I got some strange behaviour with names of the network devices. I mean, sometimes the wireless device is known as eth0 and sometimes as eth1. When it turns to be eth0, none of my wireless or ethernet works. I would like to know the configuration files to take a look at in order to solve this and if someone knows how it can happen, or knows a tutorial which explains the mounting of devices, let me know.

Thanks for the replies

fusion1275 · Apprentice Joined: 30 Oct 2005 Posts: 185

Try going through:

/etc/conf.d/net
/etc/conf.d/wireless

And double check you haven't got any duplicates of NIC names that might be confusing the startup scripts. Are you using multi NIC's? Or just the one?

Cheers
_________________
AMD XP 2600+
Mem: 1gb
Disk1: 60gb
Disk2: 250gb
Disk3: 250gb
Kernel: 2.6.19-r5
KDE: 3.5.5

quentin.fr · n00b Joined: 27 Aug 2006 Posts: 47

Thanks for the reply.
/etc/conf.d/net is an empty file /etc/conf.d/wireless is the default one. I only change the wireless device's name to what it should be: eth1.
Do you think it can be solved by using a simple rule with udev? I wonder if I can set a stupid rule such as "the first device to be mounted (eth0) is the one named "name of my ethernet card" which should ensure that wireless is set to eth1.
Any idea is welcome.

UberLord · Posted: Wed Sep 06, 2006 11:27 am Post subject:

Write a udev rule to give your interfaces persistent names.
_________________
Use dhcpcd for all your automated network configuration needs
Use dhcpcd-ui (GTK+/Qt) as your System Tray Network tool

fusion1275 · Apprentice Joined: 30 Oct 2005 Posts: 185

So do you have a built in network card & a wireless card in your machine? Please let me know if you are using 2 cards.

If you are using 2 cards and you only want 1 to come up when booting you can remove it from the rc scripts using "rc-update del <NIC> default. And then you can also remove the adapter name from /etc/conf.d/net for example "rm net.eth1".

Cheers
_________________
AMD XP 2600+
Mem: 1gb
Disk1: 60gb
Disk2: 250gb
Disk3: 250gb
Kernel: 2.6.19-r5
KDE: 3.5.5

quentin.fr · n00b Joined: 27 Aug 2006 Posts: 47

thanks for the replies.
My comp is a laptop and I have 2 built-in cards (ethernet card and wireless).
I would like that if the ethernet one is not able to get an ip (not connected) then the wireless card goes up and try to connect.
So, I'm not sure that it is a good idea (in my case) to boot with only 1 card since the computer don't know yet if ethernet is ok or not.
I'm interested in how to set such an udev rule. I should take a look at tutorials and how-to but if you can give me an example it would help me greatly. (not because I'm lazy

but I'm noob, and until the time I can make it properly...)

fusion1275 · Apprentice Joined: 30 Oct 2005 Posts: 185

Oh ok didnt know you were on a laptop. Well you will need to Use netplug or ifplugd to manage the wired interface and wpa_supplicant for the wireless. But wpa_supplicant can be a bit of a bitch so be prepared for some brain ache.

There is another posting with similar issues as you are having my friend "https://forums.gentoo.org/viewtopic-t-495231-highlight-laptop.html". Maybe take a look.

Cheers
_________________
AMD XP 2600+
Mem: 1gb
Disk1: 60gb
Disk2: 250gb
Disk3: 250gb
Kernel: 2.6.19-r5
KDE: 3.5.5

quentin.fr · n00b Joined: 27 Aug 2006 Posts: 47

Ok thank you for all. I will take a look at it.
Have a nice day

quentin.fr · n00b Joined: 27 Aug 2006 Posts: 47

Another problem to solve. I set this on 50-udev.rules in /etc/udev/rules.d

PaulBredbury · Watchman Joined: 14 Jul 2005 Posts: 7310

quentin.fr · n00b Joined: 27 Aug 2006 Posts: 47

thanks for the tip.
But, I tried to reboot once more and now when I up wlan and then make iwlist scanning
it says: