6.8.1: How to assign mac addresses to virtual eth0:x

[DZMM]

Apologies if my network terminology is incorrect.  What I'm trying to do is create virtual IPs for eth0 that I can use to segment my traffic.  I've successfully created virtual IPs using:

 

ip addr add 172.30.12.21/24 dev eth0 label eth0:1
ip addr add 172.30.12.22/24 dev eth0 label eth0:2

to create new IPs, but they all have the same mac address as eth0.  How do I give them unique mac addresses?  I've tried:

 

ip link add link eth0 address 22:22:22:22:22:22 eth0.2 type macvlan

but I get the error message "RTNETLINK answers: Device or resource busy". 

 

Does anyone e.g. @bonienl know how to crack this please?

 

Thanks in advance.