After Mainboard Replacement wrong funny eth enumeration

[mfdoom]

Hi folks,

my backupstorage was faulting, so i had to replace the mainboard. When i look at the network configuration in open-e i see that my network adapters have changed

before the hardware fail it was:

eth0 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller
eth1 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller
eth2 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller
eth3 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller

eth4 - onboard - Intel Corporation 82574L Gigabit Network Connection

now it is:

eth0 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller
eth1 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller
eth2 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller
eth3 - 4port NIC - Intel Corporation 82571EB Gigabit Ethernet Controller

eth5 - onboard - Intel Corporation 82574L Gigabit Network Connection

there is no sight of eth4, what is the problem now? I´m not able to connect to the internet over eth5, the system says my dns-settings are wrong which is not the case.

How can i revert back to my original network configuration?

Thanks in advance

[mfdoom]

found it out:

advanced network config

reset the whole ip interfaces, bonds, etc.

worked for me

thanx mfdoom

[r3vo]

well i guess the previously eth4 was the onboard nic, right?
I think the system just saves the MAC addresses. If there is a new mac adress in the system it would configure the (new) interface with eth5.

If you got any way to change the MAC address of the new board to the MAC from the replaced board it should work.
(i already made some tests in such a case)

[mfdoom]

well i guess the previously eth4 was the onboard nic, right?
I think the system just saves the MAC addresses. If there is a new mac adress in the system it would configure the (new) interface with eth5.

You are absolutely correct. It is the new onboard adapter.

[Gr-R]

well i guess the previously eth4 was the onboard nic, right?
I think the system just saves the MAC addresses. If there is a new mac adress in the system it would configure the (new) interface with eth5.

If you got any way to change the MAC address of the new board to the MAC from the replaced board it should work.
(i already made some tests in such a case)

This is correct particularly if you restore an older config and settings.
Resetting is the way to go!

[Al-S]

Yes and to do that you need to go to Console mode, CTRL+ALT+X > Restore default network settings(IP, BONDING).

This operation requires the server to be restarted, it will reorder the NIC device designations (ethXX), restore default IPs, gateways, routing and remove bond interfaces.