I'm managing lots of servers which runs Ubuntu 18.04 server. And it has at lest 4 NIC for each server. My server will reboot every weekend, and I always found the NIC name changed after reboot. Sometimes is onboad NIC, sometimes is PCI-e NIC, some times is all of NIC, sometimes none of theme.
I know I can fix it by config /etc/udev/rules.d/70-persistent-net.rules file, specific which MAC address corresponding which name. But I still want know why the NIC name always and how can I fix it in a easier way (edit rules file could cost me whole day or worse).
Thanks in advance.
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