Hello all,
I'm actually monitoring my RT-AC88U with Zabbix via SNMP.
Every time the PPPoE connection is lost, the OID of the network interfaces changes his value.
Before:
$ snmpwalk -v 2c -c public 192.168.1.1 1.3.6.1.2.1.31.1.1.1.6
IF-MIB::ifHCInOctets.1 = Counter64: 270472404...