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Analysis filter with subnet list doesn't work properly for overlapping subnets





The analysis allows using a filter with a subnet list but the query may return invalid results if subnets are overlapping.


Product: Flowmon OS

Version: 12.1.1 and lower

Platform: Any

Question/Problem Description:

I have an analysis filter with a subnet list and analysis results show IPs that do not belong to the filter. 

For example filter:

not net in []

should cover (filter out) all IPs in the range: - but the result may contain IP

Steps to Reproduce:  
Error Message:  
Defect Number: FLMON-3160
Enhancement Number:  
Cause: Incorrect subnet filtering and sorting.
Resolution: Upgrade to 12.1.2, 12.2, or newer.
Workaround: Aggregate subnets to avoid overlaps. 
Notes: Tool for subnet aggregation

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