> thanks Olivier, but may i ask you to explain it more? i have seen that
> there is a struct option_data in offered_lease in code but when these
> options set, how can i see the netmask value? where is it kept?

Well, I am afraid I have no more explanation, I just did a dhcp renew
while running wireshark and check the contents of the dialog. I could
see that in the DHCP offer, there is an option field with holds the
netmask. I did not dig any further.

Olivier

>
>
> On Mon, Jul 15, 2013 at 1:43 PM, Olivier Nicole <olivier.nic...@cs.ait.ac.th
>> wrote:
>
>> Hi,
>>
>> > i want to change dhclient code and customize it. in order to do that, i
>> > need to know the netmask for offered ip. i see code and found that struct
>> > client_lease  *offered_leases, keeps information about offered lease such
>> > as ip address but this structure hasn't any field about netmask. i don't
>> > know how i can find the netmak for this offered ip address.
>>
>> According to wireshark, it's in option t=1, l=4
>>
>> Olivier
>>
>> > any one has traced dhclient code before? how can i see the netmask for
>> > offered ip?
>> >
>> > thanks in advance,
>> > SAM
>> > _______________________________________________
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>
>
>
> --
> *Sa.M*
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