how to change ethX to ethY

[needee]

OS: SLES 10
One nic installed
# hwinfo --netcard
.
.
.
Device File: eth2
.
.
how can I change "eth2" to "eth0"
Regards
Needee

[kahoona]

It looks like you probably have two other network adapters in your computer. Linux names them starting with eth0, then eth1, etc. as it finds the adapters. If your wireless is eth2, you can't rename it to eth0 because that already exists. The only way that I've ever been able to "rename" them, is to physically remove the first two.

[needee]

Thanks Kahoona for help, and sorry for replying late.
>It looks like you probably have two other network adapters in your computer.
no I once had, but remove the all other NICs, else this "eth2".. so what I want is that, this eth2, becomes eth0

>The only way that I've ever been able to "rename" them, is to physically remove the first two.
i dont agree with you dear, because, as I have said that I have removed other NICs, but still this remaining, and alone NIC exist in the system as "eth2"

Anyways thanks for help/reply
Regards
Needee

[kahoona]

Ahhh..... so you had other NICs that you removed. That makes it different. You need to remove all the NICs from your configuration and then reboot. The remaining NIC should be found and return as eth0. I'm not sure how to remove adapters from the configuration on Linux though.

[needee]

kahoona ... once again thanks for the reply/help
Regards

[needee]

say you have two nics installed on the system, eth0, and eth1.
At some times latter, you removed eth0 from the system.
Now eth1 is the only nic in your machine... and you want to rename this nic(eth1) as eth0.

following are the steps:

# rcnetwork stop
# vi /etc/udev/rules.d/30-net_persistent_names.rules

here you find a line as
SUBSYSTEM=="net", ACTION=="add", SYSFS{address}=="00:02:b3:22:84:f3", IMPORT="/lib/udev/rename_netiface %k eth1"

simply change eth1, as eth0,
SUBSYSTEM=="net", ACTION=="add", SYSFS{address}=="00:02:b3:22:84:f3", IMPORT="/lib/udev/rename_netiface %k eth0"

save and exit


Now execute the following command
# /lib/udev/rename_netiface <old> <new>
i.e
# /lib/udev/rename_netiface eth1 eth0

# rcnetwork start

DONE

even we can give any valid name to our nic, say e.g we want to name our eth0 as lan0, then
# rcnetwork stop
# vi /etc/udev/rules.d/30-net_persistent_names.rules
here you find a line as
SUBSYSTEM=="net", ACTION=="add", SYSFS{address}=="00:02:b3:22:84:f3", IMPORT="/lib/udev/rename_netiface %k eth0"

simply change eth1, as lan0,
SUBSYSTEM=="net", ACTION=="add", SYSFS{address}=="00:02:b3:22:84:f3", IMPORT="/lib/udev/rename_netiface %k lan0"

Now execute the following command
# /lib/udev/rename_netiface eth0 lan0

NOTE:
say we gave our nic a name as lanX, nicX, or intX(i.e non ethX name), and then want to change the name from lan0 to eth0, all the above steps are required, and reboot too.

Regards
Needee

[Mita201]

needee,

Thanks a lot!!!
Looking for this for hours....

[lucas_g]

Needee,

This answer helped me a lot as well thank you very much!

Cheers,
Lucas

[needee]

My Pleasure

[needee]

I also have post this TIP on novell coolsolutions ....
Cool Solutions: Renaming a NIC
[ SO PLZ RATE THIS TIP .. thanx in anticipation ]

Greedee
Needee