On 18.4.2013. 15:12, Tor Houghton wrote:
> Hi,
> 
> I'm capturing flows on an OpenBSD 5.2 system using the pflow interface. When
> I export data using version 5, nfcapd behaves as expected.
> 
> However, if I export the flows as version 9, or IPFIX, nfcapd has a problem
> with the "first" and "last" fields of the flow record:
> 
> Flow Record: 
>   Flags        =              0x06 FLOW, Unsampled
>   export sysid =                 1
>   size         =               564
>   first        =                 0 [1970-01-01 01:00:00]
>   last         =                 0 [1970-01-01 01:00:00]
>   msec_first   =                 0
>   msec_last    =                 0
> ..
> ..
> ..
>   (src)tos     =                 0
>   (in)packets  =                 6
>   (in)bytes    =               598
>   ip router    =      192.168.16.1
>   received at  =     1366290086402 [2013-04-18 15:01:26.402]
> 
> Wireshark has no trouble decoding the packet. Has anyone else experienced
> this? 
> 
> Tor
> 


Hi,

Florian Obser upload some interesting v9/ipfix patches for pflow, so you
could try catch todays current.


c/p

On Tue, Aug 13, 2013 at 02:44:06AM -0600, Florian Obser wrote:
> CVSROOT:      /cvs
> Module name:  src
> Changes by:   [email protected] 2013/08/13 02:44:05
>
> Modified files:
>       sys/net        : if_pflow.h if_pflow.c
>
> Log message:
> Split pflow version 9 and version 10 to be able to send 64 bit
> time values for version 10.
> While there mark places which will blow up in 2038.
> OK benno@
>

As a bonus now nfdump can read v10 flows generated by pflow(4).




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