Monitor Multi-WAN Status

[stich86]

Hi guys,

i've currently three WAN (2x GPON and 1x LTE) on my OPNSense VM.
I want to monitoring when one of the goes down, but also with Net-SNMP there are no OID to check this one.

Do you have an hints or solution to achive this monitoring?
May be a custom script?

Thx in advance