Re: [NFQUEUE] Help with program that changes DHCP payload

[Vincent Arniego <vincent_arniego@yahoo.com>]

Stop 
right 
there. 
The 
ISC 
DHCP 
server 
does 
very 
funky 
stuff 
to 
see 
packets 
addressed 
to 
0.0.0.0. 
This 
means 
those 
packets 
do 
not 
go 
through 
netfilter. 
I 
bet 
this 
is 
at 
the 
root 
of 
your 
problem.

-- it actually does, I experimented with just changing the TOS of the UDP packet and somehow
I was successful. Though I have to take note that somehow, DHCP is still able to send a DHCP reply
even if the nfqueue program is running, maybe you're right about that as well.

I 
cannot 
think 
of 
a 
quick 
way 
to 
change 
this. 
Maybe 
hacking 
at 
dhcrelay 
sources 
is 
an 
better 
option.

-- too bad a dhcrelay in between is not feasible at the moment, I am thinking about this actually.
I'll check if I'm able to do this somehow, but I doubt it if its implementable.

Thanks for the help.

HTH,
M4

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