RouterOS 7 Bridge VLAN/DHCP client issue after upgrade

RouterOS General
21

I have used the dhcp client/bridge combo for quite some time on crs3xx switches. It worked flawlessly in the 6.x and 7.x versions until 7.2rc2/3. I reported the issue with support and in my report pointed out that switching to tagged/vlan interface config did indeed work.

Both methods have their uses and both should work.

22

Well for me it did not work with 7.1.3 as well.
Can you elaborate how did you manage to get it working?

23

Here are the relevant snippets:

/interface bridge
add admin-mac=AA:BB:CC:DD:EE:FF auto-mac=no name=bridge1 priority=0x2000 \
    pvid=75 vlan-filtering=yes
/interface bridge vlan
add bridge=bridge1 tagged=sfp-sfpplus1 untagged=ether24,bridge1 vlan-ids=75    
/ip dhcp-client
add interface=bridge1

On this device sfp-sfpplus1 was my switch uplink, erther24 was used for OOB management and bridge1 is for normal mgmt.

This is on CRS3xx devices, so if you have a different device, it might work differently (as stated in an earlier post)

24

This may be fixed by 7.11rc1 as reported by @skyhawk in this post from the thread Bridge VLAN-Filter Offload broken on hEXr3?

More details about the problem in this thread VLAN-Trunk not working [SOLVED - incorrect BPDU filtering on hAP ax lite HW offloaded trunk ports]