ROS 7.2 LDP does not work

RouterOS Forwarding Protocols
1

LDP does not work if the interface is a tunnel (gre, l2tp, pptp, sstp, etc)

11 ID vrf=main dst-address=10.255.1.5 label=21 peer=10.255.255.1:0 path="(empty)" 

12 ID vrf=main dst-address=10.255.24.1 label=39 peer=10.255.255.1:0 path="(empty)" 

13 ID vrf=main dst-address=10.255.24.2 label=40 peer=10.255.255.1:0 path="(empty)"
2

LDP works fine over untagged and tagged ethernet, so this must not be implemented yet.

Just out of curiosity, have you tried it over the IPv6 afi for LDP?

3

Hi. In reality it is works but due to bugs unusable.
LDP session establish but label enabled routes not properly mapped in local and remote mapping tables.
Due to it all mapping tables become invalid and forwarding table empty.
I created SUP-80288 about this.
And suggest you to do same to increase priority.