This issue has been resolved in RouterOS 5.4. Thanks!

Hello.
There is an infection of some sort that makes too much DNS requests for random domains:

It might just be a user starting up their Google Chrome web browser. If so, nothing to worry about: http://isc.sans.edu/diary.html?storyid=10312

it's not exactly CDP - packet is MNDP (MikroTik Neighbor Discovery Protocol) based on CDP. Unfortunately (or fortunately) not easily distinguishable from CDP. If a packet sniffer shows that a MNDP frame, "...uses SNAP encapsulation with type code 2000. On Ethernet, ATM, and FDDI, the destinati...

I have a Mikrotik 750G running RouterOS 5.0. After introducing my Mikrotik 750G into my network, I starting getting the following error logged on other network equipment (a Vyatta router). lldpd: cdp_decode: some mandatory CDP/FDP tlv are missing for frame received on eth1 Searching on that error br...

I would also like to request support for LLDP.

Most network hardware from the big guys only supports CDP or LLDP (not both). So it would be nice if Mikrotik could do LLDP for those of us who have non-Cisco equipment.

I registered on the forum to report hitting this bug as well on my 750G. Glad that Support was able to reproduce the problem.