ipfw with nat - allowing by MAC address

[eksffa at freebsdbrasil.com.br]

>   Thanks for everyone's continuing attempts to help!
>
>   OK so I tried putting in the ruleset which you provided - and I hit a
> rock
> very early in the run. IPFW returns that it doesn't understand the tag
> option.
>
>   ipfw add 501 skipto 1400 tag 1 log logamount 0 ip from any to any layer2
> via $ifi
>
>
>   Does this sound familiar? What should I do?

tag/tagged features were commited somewhere in time between 6.1-STABLE and
6.2-RELEASE, if I remember well. So the first release to have it is 6.2-R;

csup to RELENG_6 branch to get the latest -STABLE;