NAME
    netreport - request notification of network interface changes

SYNOPSIS
    netreport [-r]

DESCRIPTION
    netreport tells  the network management scripts to send a SIGIO signal
    to the process which called netreport when any network interface status
    changes occur.

OPTIONS
    -r   Remove the current request (if any) for the calling process.

NOTES
    If a program does not call netreport with the -r option before it
    exits, and another process is created with the same PID before any
    changes take place in  interface status, it is possible that the new
    process will receive a spurious SIGIO.