kern/89417: ng_netflow: flow sequence error

Daniil Kharoun kdl at
Tue Nov 22 13:50:50 GMT 2005

>Number:         89417
>Category:       kern
>Synopsis:       ng_netflow: flow sequence error
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Nov 22 13:50:23 GMT 2005
>Originator:     Daniil Kharoun
>Release:        6.0-RELEASE
JSC Intersvyaz
FreeBSD vpn3 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Tue Nov 22 18:05:15 YEKT 2005 root at vpn3:/usr/src/sys/i386/compile/VPN  i386
After updating system from version 5.4 up to version 6.0 my collector began to inform on losses of flows. Probably, a problem in discrepancy of sequence number (flow_seq in netflow_v5_header).

myflowcollector: lost 7650 flow records for router vpn3 !
Use ng_netflow and use a netflow collector with the control of a sequence number.

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