Step #1: Find out the MAC address of the Ethernet device
Type the following command:
Sample outputs:
# ifconfig -a | grep -i --color hwaddrSample outputs:
eth0 Link encap:Ethernet HWaddr b8:ac:6f:65:31:e5 pan0 Link encap:Ethernet HWaddr 4a:71:40:ed:5d:99 vmnet1 Link encap:Ethernet HWaddr 00:50:56:c0:00:01 vmnet8 Link encap:Ethernet HWaddr 00:50:56:c0:00:08 wlan0 Link encap:Ethernet HWaddr 00:21:6a:ca:9b:10
Note down the MAC address.
Step #2: Rename em0 as eth0
Renaming the NIC is simple process unless it is ubuntu 14.04.
So, we need to do some changes in /etc/default/grub to fix this.
I confirm that setting the following to /etc/default/grub will fix the problem:GRUB_CMDLINE_LINUX_DEFAULT=”net.ifnames=1 biosdevname=0″followed by$sudo update-gruband setup the naming in/etc/udev/rules.d/70-persistent-net.rules
To setup the naming in 70-persistent-net.rules:
In case of “70-persistent-net.rules” file not found in the /etc/udev/rules.d/ directory, We can regenerate the one using the following steps:
export INTERFACE=p2p1 export MATCHADDR=$(ip addr show $INTERFACE | grep ether | awk '{print $2}')/lib/udev/write_net_rules cat /etc/udev/rules.d/70-persistent-net.rules
repeat the above command for all the interface you have, with the appropriate name substitution.
Here’s how to rename your network card in Ubuntu 14.04:
- Get your ethernet card MAC address:
ifconfig | grep HWaddr
keep it handy (open a new Terminal window for following steps) cd /etc/udev/rules.d- backup your file:
cp 70-persistent-net.rules 70-persistent-net.rules.bak - edit your file:
sudo nano 70-persistent-net.rules - very carefully type:
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="xx:xx:xx:xx:xx:xx", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
where the xx:xx:xx are your MAC HWAddr from Step 1
Type this all as one big long line, then save and exit. - edit /etc/network/interfaces to refer to eth0 instead of m1 or whatever
- $reboot
- login and type
ifconfigto confirm your network adapter is at eth0
Now you should see the new name for your NIC.
Before:# lshw -businfo -C networkBus info Device Class Description===================================================pci@0000:03:00.0 eth0 network NetXtreme II BCM5709 Gigabit Ethernetpci@0000:03:00.1 eth1 network NetXtreme II BCM5709 Gigabit Ethernetpci@0000:04:00.0 eth2 network NetXtreme II BCM5709 Gigabit Ethernetpci@0000:04:00.1 p1p1 network NetXtreme II BCM5709 Gigabit EthernetAfter:# lshw -businfo -C networkBus info Device Class Description================================================pci@0000:03:00.0 eth0 network NetXtreme II BCM5709 Gigabit Ethernetpci@0000:03:00.1 eth1 network NetXtreme II BCM5709 Gigabit Ethernetpci@0000:04:00.0 eth2 network NetXtreme II BCM5709 Gigabit Ethernetpci@0000:04:00.1 p1p1 network NetXtreme II BCM5709 Gigabit Ethernet
or method below
Hello,
I had the same problem as you (I had a em1 NIC instead of a normal eth0). After trying several things, the one that solved my problem was this:
Edit /etc/default/grub and find these lines:
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""
Add biosdevname=0, just like this:
GRUB_CMDLINE_LINUX_DEFAULT="biosdevname=0"
GRUB_CMDLINE_LINUX="biosdevname=0"
Then run:
sudo update-grub
sudo reboot
At least this worked for me. After that I modified the /etc/network/interfaces in order to have the IP I wanted for eth0.
If this didn't work for you, I also made some changes before this, maybe they could work for you:
First try
I had the same problem as you (I had a em1 NIC instead of a normal eth0). After trying several things, the one that solved my problem was this:
Edit /etc/default/grub and find these lines:
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""
Add biosdevname=0, just like this:
GRUB_CMDLINE_LINUX_DEFAULT="biosdevname=0"
GRUB_CMDLINE_LINUX="biosdevname=0"
Then run:
sudo update-grub
sudo reboot
At least this worked for me. After that I modified the /etc/network/interfaces in order to have the IP I wanted for eth0.
If this didn't work for you, I also made some changes before this, maybe they could work for you:
First try
Get your MAC address like you did or with this command (look for the serial attribute):
sudo lshw -class network
Then:
cd /etc/udev/rules.d
sudo nano 70-persistent-net.rules
Add this(substitute the xx:xx:xx:xx:xx with your MAC address. I don't know if dev_id should be the physical id of the "lshw" command):
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="xx:xx:xx:xx:xx:xx", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
And reboot!
Second try
sudo cp /lib/udev/rules.d/75-persistent-net-generator.rules /etc/udev/rules.d/
cd /etc/udev/rules.d
sudo nano 75-persistent-net-generator.rules
And add at the end this(substitute xx:xx:xx with the first part of your MAC address):
ENV{MATCHADDR}==”xx:xx:xx:*”, GOTO=”globally_administered_whitelist”
And reboot!
Cheers,
