Invalid value for argument src-mac-address

RouterOS Beginner Basics
1

I’m trying to create mac based vlan, however following command:

/interface ethernet switch rule add switch=switch1 src-mac-address="62:8C:69:AA:5D:7C" new-vlan-id=1500

gives me error: Invalud value for argument src-mac-address.
I also tried:

/interface ethernet switch rule add switch=switch1 src-mac-address=[/ip arp get 12 mac-address] new-vlan-id=1500

But it gives the same error.

2

Oh it requires mask. And MAC mask is in weird format the same as mac, not short one. So eg:

5d:ad:43:b3:44:24/ff:ff:ff:ff:ff:ff