Fwd: pf problems

Max Laier max at love2party.net
Sat Aug 6 02:11:08 GMT 2005


Sergey,

On Friday 05 August 2005 13:29, Sergey Lapin wrote:
> Hi, all:
<...>
> Test case:
> (done from Linix machine from 1.1.1.128/25)
>
> tcpreplay -e 1.1.1.133:255.255.255.255 -i eth0 packet
> (where packet is random captured UDP packet using tcpdump -peni)
>
> or
>
> tcpreplay -e 1.1.1.133:10.2.2.2 -i eth0 packet
> (where packet is random captured UDP packet)
>
> kills machine.
> Machine hangs and doesn't react on keyboard, whatever.
> Only reset helps.
> Directly blocking addresses in pf.conf help and normal connections
> with UDP disabled
> work well.
> Any ideas?

What version of FreeBSD are you running?  Do you have a SMP/PREEMPTION kernel?  
Does setting debug.mpsafenet=0 in loader.conf change the situation?  Do you 
have a chance to attach a remote debugger or can you try to break into the 
debugger from the console?

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