I have a list of IP Addresses and the amount of data that they have transfered over a period of time, it is in the form: 
10.0.0.1 555555
10.2.1.6 444444
10.6.2.8 333333
10.2.1.2 222222
etc...

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I am performing some actions on these IP's but ideally I would like to do it by subnet. All the IP Addresses on the network belong to a /29 subnet. I am using NetAddr::IP to then get the network address that corresponds to each individual IP. The list could look like this 
10.0.0.0/29 10.0.0.1 555555
10.2.1.0/29 10.2.1.6 444444
10.6.2.0/29 10.6.2.8 333333
10.2.1.0/29 10.2.1.2 222222
etc...

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I now want to group together all the lines that have the same network address and add up the bytes transfered. This in theory would like something like: 
10.2.1.0/29 666666
10.0.0.0/29 555555
10.6.2.0/29 333333

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I then need to run these through some more processes that I have working on the individual IP Addresses at the moment. The problem is that there are a very large amount of IP's and subnets, and they can change over every measurement period as can the data transfered.

At the moment I am trying to use arrays and foreach loops etc.. to try and get this working.

Any help as I struggle on with this would be appreciated.

In reply to Sorting IP Subnets together by strat.minger

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