why "block quick on wlan0" doesn't stop DHCP?

[Greg Hennessy]

Could be talking complete nonsense here, but....

IIRC BPF sees all traffic before PF. DHCP hooks at the BPF layer, so it'll be serviced before any filtering policy applies. 


Greg
 

> -----Original Message-----
> From: owner-freebsd-pf at freebsd.org [mailto:owner-freebsd-
> pf at freebsd.org] On Behalf Of Michael
> Sent: 28 January 2011 9:20 AM
> To: freebsd-pf at freebsd.org
> Subject: why "block quick on wlan0" doesn't stop DHCP?
> 
> Hello,
> 
> Here is my simple rule set:
> 
> set loginterface wlan0
> block log
> block quick on wlan0
> 
> Now I'm booting my 8.1-R box. After it's up and running with pf I'm
> powering on my wireless access point.
> 
> After couple seconds my wlan0 is associated and receives it's IP
> address. I don't understand why was it not stopped by pf?
> And how can I tune my rules to be able to control DHCP conversation?
> 
> Michael
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