Mikrotik Bridge FDB Changes

Mikrotik has changed how the Bridge FDB is done, Observium does not show correct port for the FDB Table, as the FDB table via SNMP - instead of returning IfIndex, it returns a bridge port index, which needs to be translated into correct IfIndex as below

• .1.3.6.1.2.1.17.4.3.1.2 MAC table
• .1.3.6.1.2.1.17.1.4.1.2 BridgePortIndex to InterfaceIndex Mapping
• .1.3.6.1.2.1.31.1.1.1.1 IfIndex - Interface name{}

E.g:

iso.3.6.1.2.1.17.4.3.1.2.244.146.191.240.164.151 = INTEGER: 1 (1 is the bridge port index for the mac address)

iso.3.6.1.2.1.17.1.4.1.2.1 = INTEGER: 2 (this is bridge port matching 1 to index 2)

iso.3.6.1.2.1.31.1.1.1.1.2 = STRING: "ether2" (ifindex 2 correct)

Some info:

https://forum.mikrotik.com/viewtopic.php?t=98246#p971102