Is bpf a part of IPFW, or am I confused?

[Andreas Davour]

On Wed, 5 Jan 2005, Charles Swiger wrote:

> On Jan 5, 2005, at 3:09 PM, Andreas Davour wrote:
>> I have searched the handbook and the manpages and not really understood the 
>> role of bpf. Is it supposed to be enabled when I use IPFW or is it another 
>> beast altogether, best left undisturbed?
>
> The BPF, or Berkeley Packet Filter, is really intended for use by userland 
> applications which want to perform network analysis and packet filtering. 
> IPFW and the other firewalls for FreeBSD are written as kernel modules and 
> thus deal with the network stack directly.
>
> The current DHCP implementation (ISC's dhcpd and dhclient programs) depends 
> on BPF to work, so I would be cautious about removing it from your kernel 
> unless you are sure you won't need it.

Then I'd better not remove it from my kernel config, since I use dhcp 
for my network connection.

Thanks for the warning!

/andreas

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