Ethernet iface names changed after reboot

[yog]

Hehey Folks

I’m running in a very disgusting problem, after a fresh install on a supermicro, i did the settings for the lan interface (eth2).

I did a reboot and now the “LAN iface” is now eth1… ok i delete the eth2 settings and did the settings on eth1, i don’t trust this anymore and so i did a reboot one more time… holy s**t … now it is eth3 …

I have 2 on-board eth interfaces and 2 on my pci nic, i never change the cable but the system change the eth(number) after every reboot.

sometimes the 1, sometimes the 3 and sometimes the 2… but never the 0, or i did not enough rebootings.

This is absolutely not ok and i use roling release, and my question is; is that a way to static-mapping the MAC to eth(number).

I can’t play russian-lan-roulet on a important network device.

warm regards.

[n.fort]

Hi @yog .
You can set in config file mac interfaces.
For example, if you have 4 eth interfaces. you may try something like this.

First, take note of mac address of your devices. Then, delete and assigned mac address again:

delete interfaces ethernet eth0 hw-id
delete interfaces ethernet eth1 hw-id
delete interfaces ethernet eth2 hw-id
delete interfaces ethernet eth3 hw-id

set interfaces ethernet eth0 hw-id xx:xx:xx:xx:xx:01 
set interfaces ethernet eth1 hw-id xx:xx:xx:xx:xx:02 
set interfaces ethernet eth2 hw-id xx:xx:xx:xx:xx:03
set interfaces ethernet eth3 hw-id xx:xx:xx:xx:xx:04 

Then commit, save, and reboot.

[yog]

mhhh this solution is such logic, but no success, the eth* is still on a random trip.

edit:
i was on at my router, cause… ssh is not possible on this random interfaces. i check the mac addesses, they are all the same, so there is no “mac-changer” in the background.

[16again]

Do NICs really have identical MAC addresses? That seems like faulty hardware to me.
If other OSes can handle this, it’s because they identify NICs by internal hardware ID (bus/slot number)

[yog]

Hehey, sorry for the delay.
I did a new fresh install and my first step was to static mapping the MAC to Interfaces and now it works like a charm. This is a little option, but for me, a very powerfull option and after 12 or 14 reboot, they are stable, with and without ip/ipv6 and pppoe settings.

thanks for the help and warm regards.

yog / andi