Arch Linux

x-yuri

Member

Registered: 2013-01-06

Posts: 161

[SOLVED] systemd-udevd renames network interfaces

During install I enabled dhcpcd service like this:

systemctl enable dhcpcd@eth0.service

Seems perfectly valid, eh? But after reboot network I've got the following messages:

[ TIME ] Timed out waiting for device sys-subsystem-net-devices-eth0.device.
[DEPEND] Dependency failed for dhcpcd on eth0.

dmesg | less
...
systemd-udevd[111]: renamed network interface eth0 to enp0s3
...

It appears systemd changes network interface names. But then I suppose dhcpcd@.service is to be removed:

[Unit]
Description=dhcpcd on %I
Wants=network.target
Before=network.target
BindsTo=sys-subsystem-net-devices-%i.device
After=sys-subsystem-net-devices-%i.device

[Service]
Type=forking
PIDFile=/run/dhcpcd-%I.pid
ExecStart=/usr/sbin/dhcpcd -q -w %I
ExecStop=/usr/sbin/dhcpcd -x %I

[Install]
Alias=multi-user.target.wants/dhcpcd@eth0.service

Last edited by x-yuri (2014-12-16 10:10:49)

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: [SOLVED] systemd-udevd renames network interfaces

Have you tried

systemctl enable dhcpcd@enp0s3

See: https://bbs.archlinux.org/viewtopic.php?id=156254

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x-yuri

Member

Registered: 2013-01-06

Posts: 161

Re: [SOLVED] systemd-udevd renames network interfaces

Sure, take a closer look at /usr/lib/systemd/system/dhcpcd@.service file. AFAIR it creates symbolic link with the name dhcpcd@eth0.service no matter what.

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,645

Website

Re: [SOLVED] systemd-udevd renames network interfaces

Somone already opened a bug report about this I think... search the tracker.

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WorMzy

Administrator

From: Scotland

Registered: 2010-06-16

Posts: 12,462

Website

Re: [SOLVED] systemd-udevd renames network interfaces

You can manually create/rename the symlink to have the correct name, but yes, it's a bug.

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x-yuri

Member

Registered: 2013-01-06

Posts: 161

Re: [SOLVED] systemd-udevd renames network interfaces

graysky, yes, it appears so

Last edited by x-yuri (2013-01-18 00:13:36)

slytux

Member

From: New York

Registered: 2010-09-25

Posts: 136

Re: [SOLVED] systemd-udevd renames network interfaces

That's lame, good thing I'm using netcfg@alias on my test server.  It's pretty simple for a dhcp setup.

#Copy the dhcp example one level up and rename it or create a symlink to it
cp /etc/network.d/examples/ethernet-dhcp /etc/network.d/dhcp
# Modify the 'NETWORKS' line in /etc/conf.d/netcfg by substituting the name of that file
# Enable service in systemd
systemctl enable netcfg@dhcp

billf

Member

Registered: 2013-01-18

Posts: 1

Re: [SOLVED] systemd-udevd renames network interfaces

old to Linux new to archLinux

jasonwryan -thanks!

Your post helped me figure it out why my Ethernet interface name was changed to enp0s3 and why - I like the old naming convention ethx easier for me to remember.  So went the route with custom rules in /etc/udev/rules.d 

Here is what I used.

70-my-net-names.rules
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="08:00:27:3b:f3:cd", NAME="eth0"