vRtrIfDHCPOperAutoFilter 1.3.6.1.4.1.6527.3.1.2.3.19.1.19

The value of vRtrIfDHCPOperAutoFilter indicates the number of active auto-filter entries per interface. These entries are created in the TIMETRA-FILTER-MIB::tIPFilterTable by the agent by snooping valid 'DHCP ACK' messages.