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noddyt
Tux's lil' helper
Joined: 28 Feb 2006
Posts: 79
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 Posted: Thu Sep 10, 2015 4:20 pm Post subject: Why has my network interface name changed? |
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Hi
My network interface (net.enp14s0) failed to start up on boot today on my laptop. It's had gentoo on it for ~5 years, updated weekly.
The error:
| Code: |
* Bringing up interface enp14s0
* ERROR: interface enp14s0 does not exist
* Ensure that you have loaded the correct kernel module for your hardware
* Error: net.enp14s0 failed to start
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I haven't made any changes to my kernel since may.
So why has udev changed the name of my network card.
| Code: | $ ls /sys/class/net/
lo p2p1 wlp20s0 |
(I don't use wlp20s0 wireless card)
Reading the gentoo x86 handbook on network interface naming says that name is from ID_NET_NAME_PATH. But checking that produces:
| Code: | $ udevadm test-builtin net_id /sys/class/net/p2p1 2>/dev/null
ID_NET_NAME_MAC=[my mac address]
ID_OUI_FROM_DATABASE=[company name]
ID_NET_NAME_PATH=enp14s0 |
So the interface name shouldn't have changed according to that.
Setting up the network connection for net.p2p1 works but I don't like unnecessary changes.
I'm just trying to understand what's happened here and if this may be a bug.
Thanks |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Mon Sep 14, 2015 7:31 pm Post subject: |
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| Quote: | | So why has udev changed the name of my network card. |
The unflattering truth is that "persistent network interface names" is anything but. I'd add something about udev's upstream developers being clueless idiots, but we have about ten active 500-post threads for that very subject already.
Just disable that antifeature entirely - your ethernet and wifi will then be named eth0 and wlan0 respectively and *stay* that way. |
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Networking & Security
