From RFC 1472 (PPP/Security MIB)
PPP security group
From RFC 1473 (PPP/IP MIB)
PPP IP group
From RFC 1474 (PPP/Bridge MIB)
PPP Bridge group
From RFC 1573 (IfMIB)
ifMIBObjects group
From RFC 1695 (atmMIB)
atmMIBObjects
From RFC 1907 (SNMPv2)
only snmpSetSerialNo OID
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