Intercepting a packet, changing it and re-injecting into the network

Julian Elischer julian at
Mon Dec 25 12:02:06 PST 2006

Kevin Sanders wrote:
> On 12/22/06, Julian Elischer <julian at> wrote:
>> just as a reference point,
>> Using ipfw I was able to saturate a Gb bridge
>> (between 2 bge interfaces) while filtereing against a
>> table of 128000 addresses. (in FreeBSD 4.8) using 30% cpu..
>> machines have gotten faster since then  but the OS has slowed a bit.
> That's what I'm looking for.  Were you using polling or any non-default HZ
> setting for that?  Thanks.
> Kevin
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it was 4.11 remember but I had no nonstandard settings.

We've moved to 6.1 but I have not repeated the tests yet.

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