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Date:      Mon, 15 Jul 2013 16:34:07 +0700
From:      Olivier Nicole <olivier2553@gmail.com>
To:        saeedeh motlagh <saeedeh.motlagh@gmail.com>
Cc:        Olivier Nicole <on@cs.ait.ac.th>, s m <sam.gh1986@gmail.com>, freebsd-questions <freebsd-questions@freebsd.org>
Subject:   Re: find netmask for offered lease in dhclient code
Message-ID:  <CA%2Bg%2BBvhtJqcYxwLw8OhgM-DwcwmNO-vHea1cYn67ZwL2Ey-zeQ@mail.gmail.com>
In-Reply-To: <CAN%2BS=WA9je6gPEswFo%2B47mkHX-b68pUxjFL8zho-wWpjaR3gOA@mail.gmail.com>
References:  <CAA_1SgFfZGn06kL_m8fvOA67TszjU5A8F55X_xuiSL8-xtmnng@mail.gmail.com> <CA%2Bg%2BBviw_OVcb8S=RPSzhy_JjCgXHMH7kcRNz8OvtNLEBBqomg@mail.gmail.com> <CAN%2BS=WA9je6gPEswFo%2B47mkHX-b68pUxjFL8zho-wWpjaR3gOA@mail.gmail.com>

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> 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.nicole@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*
> _______________________________________________
> freebsd-questions@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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