I was just about thinking to it, I will try it.
Many thanks and have a wonderful day!

On Sat, Dec 17, 2022 at 4:07 PM Barbaros Bilek <barbarosb...@gmail.com> wrote:
>
> Hello Cristian,
>
> If you put your physical interface into veb(4) and set link1 flag you can 
> filter dhcp packets.
> For more please read man veb
> Have a nice weekend.
>
> --
> Best Regards
> Barbaros
>
>
>
> On Sat, Dec 17, 2022 at 4:40 PM Cristian Danila <clau...@postmail.ro> wrote:
>>
>> Thanks for the provided info, now it makes sense about what is happening.
>> Any idea about a possible way to control these packets?
>> Still investigating but I had still not found yet a way to do it.
>>
>> Thank you.
>>
>> On Sat, Dec 17, 2022 at 3:11 PM David Gwynne <da...@gwynne.id.au> wrote:
>> >
>> > dhcpd reads packets off the wire using BPF, which happens as packets come 
>> > off the network interface, but before the IP stack where pf runs.
>> >
>> > > On 17 Dec 2022, at 22:40, Cristian Danila <clau...@postmail.ro> wrote:
>> > >
>> > > Good day!
>> > > I finished setup an DHCP server and for some reason it seems DHCP
>> > > server is ignoring PF filter.
>> > > In short, in PF I have active only one rule:
>> > > block drop quick all
>> > >
>> > > Double checked PF and it is enabled
>> > > So using a windows machine to test DHCP server:
>> > > 1) ifconfig /release
>> > > 2) ifconfig /renew
>> > >
>> > > somehow dhcpd still serves the windows(only when is enabled) and
>> > > ignores PF rule.
>> > > Could you please help me in telling if dhcpd has some intended logic
>> > > to ignore PF or what might
>> > > cause this unexpected behavior?
>> > >
>> > > Kind Regards!
>> > >
>> >
>>

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