The device reporting MIB2D_KVM_FAILURE.

Dec 24 05:15:00 router-1 mib2d[8771]: %DAEMON-3-MIB2D_KVM_FAILURE: sysAppl_kvm_open: kinfo_getallproc returns error: 12
Dec 24 05:17:37 router-1 mib2d[8771]: %DAEMON-3-MIB2D_KVM_FAILURE: sysAppl_kvm_open: kinfo_getallproc returns error: 12
Dec 24 05:17:55 router-1 mib2d[8771]: %DAEMON-3-MIB2D_KVM_FAILURE: sysAppl_kvm_open: kinfo_getallproc returns error: 12

These logs are not related to any impact to data traffic.

These are printed when the SNMP call to the kernel fails for a specific process (in this case, kinfo_getallproc).

A reboot should clear these messages.