TCP: how do I find where a netstat statistics (-s) counter is incremented in the kernel?

Solution In Progress - Updated -

Issue

  • I am using it to authenticate Cisco devices. This fails on some devices and appears to be related to the kernel resetting the connection. I see "connections reset due to unexpected data" counter increase every time the device fails to authenticate.
    Also the 'resets sent' counter increases as well.
  • How do I find out where these "netstat -s" counters are incremented in the kernel code?

Environment

  • Red Hat Enterprise Linux 6
  • Fedora FC19
  • TACACS

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