4011 is capable of doing inter-VLAN routing with firewall at line rate (10Gbit) For that to happen: 1. You just need to remove the bridge and configure VLANs directly on SFP+ port. /interface vlan add interface=sfp-sfpplus1 name=vlan16 vlan-id=16 add interface=sfp-sfpplus1 name=vlan18 vlan-id=18 2. ...

Hello,

I'm having exactly the same issue on my 4011.
2.4GHz WIFI works, but 5GHz wifi disappears every 1-3 days. Interface is up but other clients cannot detect the AP. I need to completely reboot the device to get it back online.
I've opened support case with Mikrotik but so far no luck.