Why does snmpd not report IPv6 interfaces actived after snmpd starts?

Solution Verified - Updated -

Issue

  • Why does snmpd not report IPv6 interfaces activated after snmpd starts?
    1. Disable snmpd and bring eth1 down:
      # service snmpd stop
      Stopping snmpd:                                            [  OK  ]
      # ifdown eth1
      
    2. Start snmpd and query it for IPv6 interfaces:
      # service snmpd start
      Starting snmpd:                                            [  OK  ]
      # snmpwalk -c public -v 1 localhost 1.3.6.1.2.1.55.1.5.1.2
      IPV6-MIB::ipv6IfDescr.1 = STRING: lo
      IPV6-MIB::ipv6IfDescr.2 = STRING: eth0
      
    3. Bring eth1 back up and query snmpd again:
      # ifup eth1
      # snmpwalk -c public -v 1 localhost 1.3.6.1.2.1.55.1.5.1.2
      IPV6-MIB::ipv6IfDescr.1 = STRING: lo
      IPV6-MIB::ipv6IfDescr.2 = STRING: eth0
      
    4. Note that eth1 is not listed even though it is online!

Environment

  • Red Hat Enterprise Linux 6.0
  • net-snmp-5.5-19.el6

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