How to change interface name linux

looks like you’re using some virtualization software, In that case, its the Virtualization software whether its Xen, KVM, Hyper-V, VMWare or any other, has the option to put the static MAC address. You’ll have to look out for the options..

Thanks Balvinder,
I am working on a embedded self designed card and i have only one option to put the static MAC by using kernel. But i don’t want to change the kernel again. So looking for udev alternate, if it is possible. Like i can change the device name, can i change the MAC as well?

Add this entry into your rc.local file

ifconfig eth0 down hw ether 00:C1:26:10:30:C5 up

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How to Rename Linux Interfaces

If you are unfamiliar with renaming interfaces, this article can help. The default RedHat ifrename utility is a very useful tool for renaming the interfaces but sometimes it doesn’t always work. We will explain in detail the process of renaming interfaces correctly.

The file /etc/iftab contains descriptive information about the various network interfaces. iftab is only used by the program ifrename to assign a consistent network interface name to each network interface.

/etc/iftab defines a set of mappings. Each mapping contains an interface name and a set of selectors. The selectors allow ifrename to identify each network interface on the system. If a network interface matches all descriptors of a mapping, ifrename attempt to change the name of the interface to the interface name given by the mapping.

Finding MAC address on all interfaces can be done by:

# ifconfig -a | grep -i hwaddr

Once you have the script and created the iftab you can test it

You can blink the interface lights on the card to make sure you have the correct card configured.

Script below «ifrename» :

#!/bin/sh
#
# chkconfig: 2345 09 60
# description: /sbin/ifrename
# processname: ifrename
#

# Source function library.
. /etc/rc.d/init.d/functions

[ -x /sbin/ifrename ] || exit 0

# Define where ifrename is installed.
DAEMON=»/sbin/ifrename»

start() <
if status $DAEMON > /dev/null; then
echo -n $»$DAEMON: already running «
failure
echo
return 1
fi

# Start daemons.
echo -n $»Starting ifrename: «
daemon $DAEMON $OPTIONS
RETVAL=$?
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/ifrename
echo
return $RETVAL
>

stop() <
# Stop daemons.
echo -n $»Shutting down ifrename: «
echo OK
return 0
>

Once you add the /etc/init.d/ifrename script we can make it executable :

# chmod +x /etc/init.d/ifrename

Starting the ifrename service:

Then test again, and the cards should have changed assignments, if not continue reading:

Once that works simply add ifrename to your startup:

# chkconfig ifrename on

/etc/iftab example:

eth0 mac 00:50:56:c0:00:02
eth1 mac 00:50:56:c0:00:03
. . .
ethN mac 00:50:56:c0:00:03

If you get an error message like below during ifrename example:

Simply means you have no entry in the 70-persistent-net.rules for eth5 or whatever interface your working on. Make sure you have modified the 70-persistent-net.rules in /etc/udev/rules.d/ like below examples .

How do you find out information on what driver is owned to interface p1p2? Below example from terminal will give you driver info.

driver: ixgbe
version: 3.19.1-k
firmware-version: 0x61bf0001
bus-info: 0000:41:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no

Now you can remove the driver which in our case it’s the IXGBE by Intel.

# rmmod ixgbe;modprobe ixgbe

Note : Make sure system isn’t in production when running above command.
You can reload the interface at this point with three options

# reboot

Edit 70-persistent-net.rules

To rename eth4 as wan1, edit a file called 70-persistent-net.rules in /etc/udev/rules.d/ directory, enter:

If 70-persistent-net.rules doesn’t exist we have an example below: The names of the Ethernet devices are listed in this file as follows:

Locate and identify the line with the NIC from step 1 (look for the MAC address). It may look like above. In this example, the interface eth0 will be renamed to wan0 (change NAME=»eth0″ to NAME=»wan0″ ):

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How to Change Network Interface name on Ubuntu

To change Network Interface name on Ubuntu

Generally, a Network interface is named as either eth0, eth1, eth2 and etc. The network interface name depends on ethernet connections available and its number should vary from eth0 to eth1. Once Ubuntu 16.04 is installed, the network interface name gets changed from eth0 to ens33. It is quite easy to change the Network Interface name on your Ubuntu machine and this article can help you with that.

Changing the Network Interface name

You can verify your network interface name using ‘ ifconfig’ command or ‘ ip a’ command.

Ubuntu has it network interface name as eth0 while in boot time it will automatically renamed to ens33 to verify this on use the below command.

In order to change Network Interface name we require to edit grub configuration file as shown below.

Add the following lines to it.

Next regenerate grub configuration file.

Now open the network interface file by running the following commnad.

Add the following content to it.

Now that’ s all just you need to reboot your system and check network interface name once again with ‘ ifconfig’ command

The network interface has been changed now. Changing the network interface was quite easy wasn’ t it? Having your network interface changed may help you a lot.

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Frequently asked questions ( 5 )

What is the future of the NIC port?

«There doesn’t appear to any doubt that the NIC standard has a very clear-cut advantage in transfer speeds and in how widely spread it is.

«How can I see what it does and control its activity?

On Windows, open your Windows Control Panel, then click the icon or link to the Akamai NetSession Interface Control Panel.

What is a NIC port and What does it do?

«A Port or Connector :
A Port or Connector on a Dell PC has either holes or a slot that matches the plug or device that you are connecting to the Port.
«

What are the Different categories of cable and what do the different categories mean?

Co-Axial — Co-Axial came in Thinnet and Thicknet, both standards are now defunct and no longer in use. Twisted Pair — Twisted Pair came in several combinations and categories (CAT3, 4, 5, etc.).

«How do I select the best cable for the job?

While Network Cables do look alike from the outside and they all have the same connectors, they can have significant differences on the inside. You can find out the type of cable you have by looking at the text printed on the side of the cable.

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hello i am trying to install ubuntu 20.04 and i keep getting stuck on the following screen after many many hours of waiting:

wanting to boot it up from try without install first(safe mode) so i can manually set it to install the os to an external ssd. i want to do this because my laptop is originally a windows machine, and as you reading this are aware windows does not like to put hard drives into ext/4 format. ideally once i get it installed on ssd, i use that to install onto the hard drive because then i can do what im wanting to do.

used kernal boot settings: acpi=off noapic nolapic nodmraid nomodeset

i appreciate any help tried my best to solve problem on my own but i cant

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