Connection tracking flow accounting

configname: CONFIG_NF_CT_ACCT

Linux Kernel Configuration
└─>Networking
└─>Networking options
└─>Network packet filtering framework (Netfilter)
└─>Core Netfilter Configuration
└─>Connection tracking flow accounting
In linux kernel since version 2.6.15 (release Date: 2006-01-02)  
If this option is enabled, the connection tracking code will
keep per-flow packet and byte counters.

Those counters can be used for flow-based accounting or the
`connbytes' match.

If unsure, say `N'.