[FUGSPBR] regras de ipfw com mesmo numero

[Capriotti]

Alguém tinha perguntado há algum tempo atrás como funcionava quando duas 
regras tinham o mesmo número.

Elas são verificadas na ordem de entrada; A que foi criada primeiro 
é  verificada primeiro.

veja o texto da man page:

>rule_number
>         Each rule is associated with a rule_number in the range 1..65535,
>         with the latter reserved for the default rule.  Rules are checked
>         sequentially by rule number.  Multiple rules can have the same
>         number, in which case they are checked (and listed) according to
>         the order in which they have been added.  If a rule is entered
>         without specifying a number, the kernel will assign one in such a
>         way that the rule becomes the last one before the default rule.
>         Automatic rule numbers are assigned by incrementing the last non-
>         default rule number by the value of the sysctl variable
>         net.inet.ip.fw.autoinc_step which defaults to 100.  If this is
>         not possible (e.g. because we would go beyond the maximum allowed
>         rule number), the same number of the last non-default value is
>         used instead.

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