Format

    output alert_fast: [<filename> ["packet"] [<limit>]]
    <limit> ::= <number>[('G'|'M'|K')]

• filename: the name of the log file. The default name is $<$logdir$>$/alert. You may specify "stdout" for terminal output. The name may include an absolute or relative path.

• packet: this option will cause multiline entries with full packet headers to be logged. By default, only brief single-line entries are logged.

• limit: an optional limit on file size which defaults to 128 MB. The minimum is 1 KB. See 2.6.10 for more information.