Source and Dest IP Address showing as 0.0.0.0/24

Source and Dest IP Address showing as 0.0.0.0/24

Hi All,
 
I have just started using Manage Engine Netflow reporting, netflow packets successfully get to the collector. However, IP addresses on the reports show up as 0.0.0.0/24 (correct subnet mask).
 
Is anyone able to help me with this issue?
 
Regards,

Sarah

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