https://wiki.mikrotik.com/wiki/Manual:Interface/VLAN
VLAN successfully passes through regular Ethernet bridges
https://wiki.mikrotik.com/wiki/Manual:Basic_VLAN_switching
https://wiki.mikrotik.com/wiki/Manual:Layer2_misconfiguration
DHCP offering lease without success issue with Mikrotik on the far side of Ubiquiti device.
![](https://www.incredigeek.com/home/wp-content/uploads/2020/01/VLAN-DHCP-Offering-Lease-without-success.png)
Make sure that radio does not have the VLAN configured on just the WAN interface. Easiest way would be to put it in bridge mode and use the management VLAN.