The interval argument specifies in seconds the interval for
    updating and displaying information. The first line of the
    display shows cumulative statistics; subsequent lines show
    statistics recorded during interval.

    Default Display

    When used without flags, the netstat command displays a list of
    active sockets for each protocol. The default display shows the
    following items:

    o  Local and remote addresses

    o  Send and receive queue sizes (in bytes)

    o  Protocol

    o  State

    Address formats are of the form host.port or network.port if
    a socket's address specifies a network but no specific host
    address. The host and network address are displayed symbolically
    unless -n is specified.

    Interface Display

    The network interface display format provides a table of
    cumulative statistics for the following:

    o  Interface name

    o  Maximum Transmission Unit (MTU)

    o  Network Address

    o  Packets received (Ipkts)

    o  Packets received in error (Ierrs)

    o  Packets transferred (Opkts)

    o  Outgoing packets in error (Oerrs)

    o  Collisions

       Note that the collisions item has different meanings for
       different network interfaces.

    o  Drops (optional with -d)

    o  Timers >((optional with -t)

    Routing Table Display

    A route consists of a destination host or network and a gateway
    to use when forwarding packets. Direct routes are created
    automatically for each interface attached to the local host
    when you issue the ifconfig command. Routes can be modified
    automatically in response to the prevailing condition of the
    network.

    The routing-table display format indicates available routes and
    the status of each in the following fields:

    Flags

    Displays the state of the route as one or more of the following:

    C              A cloning route created by the route command.

    c              A cloned route.

    D              This route was dynamically created by a redirect.

    F              A fragment to path MTU size is disabled on this
                   route.

    G              This route is to a gateway.

    H              This route is to a host

    I              A route that contains valid link-layer
                   information.

    L              A loopback route that was created by the kernel.

    M              A route that was modified by a redirect.

    m              A route that was created by a Mobile IPv6 binding
                   update.

    P              A route that was created by the Path MTU discovery
                   process.

    p              A indicates that Path MTU discovery is disabled on
                   this route.

    R              This is a reject route that was created by the
                   route command.

    S              This is a static route that was created by the
                   route command.

    U              Up, or available.

    refcnt

    Gives the current number of active uses for the route.
    Connection- oriented protocols hold on to a single route for the
    duration of a connection; connectionless protocols obtain routes
    in the process of sending to a destination.

    use

    Provides a count of the number of packets sent using the route.

    interface

    Indicates the network interface used for the route.

    When the -v flag is specified, the routing table display includes
    the route metrics. An asterisk (*) indicates the metric is
    locked. See route(8) for additional information on routing.