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srd
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PostPosted: Wed Mar 04, 2015 9:00 pm    Post subject: ERROR: interface eno1 does not exist Reply with quote

When trying to start my networking, I'm getting ...
Code:

 * Bringing up interface eno1
 * ERROR: interface eno1 does not exist
 * Ensure that you have loaded the correct kernel module for your hardware
 * ERROR: net.eth0 failed to start


This was working until my latest "-uDN world". My kernel config is correct, NIC drivers built as modules for a Broadcom network card, so I know these are correct as they have been working.

I have a feeling it's something to do with eudev, or possibly some changes I made to keep systemd off. I added -systemd to the USE flags and "sys-apps/systemd" and "sys-fs/udev" to package.mask.

One thing I've noticed is that /etc/udev/rules.d is empty and I'm not sure why, but appears to have happened after the update. Anyone know how to repopulate /etc/udev/rules.d? Or what to try next?
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Hu
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PostPosted: Thu Mar 05, 2015 3:03 am    Post subject: Reply with quote

What is the current name of your Ethernet interface?
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n3bul4
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PostPosted: Thu Mar 05, 2015 6:58 am    Post subject: Reply with quote

If you know the module name, have you tried loading the module manually by modprobe?
Maybe the device appears after doing so...
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szatox
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PostPosted: Thu Mar 05, 2015 7:12 pm    Post subject: Reply with quote

Or maybe it's called differently now. Ask your kernel:
ls -l /sys/class/net/
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srd
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PostPosted: Thu Mar 05, 2015 7:27 pm    Post subject: Reply with quote

That's what the problem was. The interface name changed from eno1 to eth0.

Thanks,
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Hu
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PostPosted: Thu Mar 05, 2015 10:55 pm    Post subject: Reply with quote

The interface starts as eth0. If it is still eth0, then udev did not mangle your interface name.
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srd
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PostPosted: Fri Mar 06, 2015 4:51 am    Post subject: Reply with quote

When I set this node up from a clean install, it started out as eno1. Then the updates changed it to eth0. Beyond that, I can't say what really happened. I'm quite confused when I see systemd-udev, eudev, udev, etc... but best I can tell, these udevs are changing my names (I guess pending which one is used). It happens on most all my systems as I keep them in close sync, and its been happening as of the last few months. Also noticed some messages while booting that says eth0, eth1, etc... are being changed to eno0, eno1, etc... in the boot output. So, yeah, I'm thoroughly confused as these names keep going back and forth on me.
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Hu
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PostPosted: Sat Mar 07, 2015 1:55 am    Post subject: Reply with quote

The kernel assigns names from the eth* family (among others). As part of the "predictable network interface names" feature, systemd-udevd renames your interface from the kernel assigned name to en* (among others). You can, and usually should, disable this renaming. I suspect that eudev has disabled this naming automatically.
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srd
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PostPosted: Mon Mar 09, 2015 12:44 am    Post subject: Reply with quote

Ok, this makes sense to me now. I take it, /etc/udev/rules.d/80-net-name-slot.rules is what does the renaming and via this is how its turned off?
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Tony0945
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PostPosted: Mon Mar 09, 2015 12:51 am    Post subject: Reply with quote

Quote:
/etc/udev/rules.d/80-net-name-slot.rules is what does the renaming and via this is how its turned off?


Just create a blank file. Apparently this overwrites the default rules with blank rules.
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