Hi, everyone! I want to start by saying that I am a network professional, but RouterOS is making a monkey out of me! 
TLDR: I’m introducing an RB4011 to my network (ie. replacing another router), to do all of the inter-VLAN routing. I’m trunking the RB4011 with a Mikrotik CSS326 switch. The switch config is solid and very straightforward. I have access ports both on my router and my switch, which should behave identically.
Q: In the router config, which ports should be members of the bridge? Do I add all access ports for all VLANS + the trunk port + the VLAN ints? I’ve done various combinations of this (and have disabled drop rules in the firewall), but still not working correctly, meaning that I can’t pull an IP, or I can pull an IP but can’t ping my DG (ie. no answers to my ARPs), etc.
Other info: I’m moving a test client around to different access ports (on the router and switch) to test pulling DHCP from the right scope, pinging other hosts, etc. I’m also running Wireshark on the test client and I can see BPDUs from the opposite device, but ARPs for IPs are going un-answered. This is just bizarre for a guy that can do this all day long on Cisco devices. Any links to a good config walk-through on this would be appreciated. I know that there’s a lot more to the config, but would be happy to answer any questions. To me, feels like something in the bridge setup. Thx in advance! - mBrane
P.S. Yes, I’ve read the inter-VLAN routing stuff out there, but I’m clearly missing something. Yes, VLAN filtering is enabled on my bridge.