The mac number of vim1 will change every time it restarts. How can I not change it?

[zglvszy]

The mac number of vim1 will change every time it restarts. How can I not change it?

[Gouwa]

FYI:

Duplicate MAC Addresses and Serial Numbers

I have a huge problem with a set of Khadas Vim recently purchased. They all have the same serial numbers and Ethernet MAC addresses. How do I get an original MAC address at least so the system doesn’t come into conflict on the network?