Netmask issue
Jeff Wieland
wieland at purdue.edu
Tue Oct 6 12:39:22 UTC 2009
Reissom Beshir wrote:
> Simon Hobson wrote:
>>
>>> So does this bug exist in dhcp-4.0?
>>
>> Is it a bug ? The OP didn't specify a netmask option to send to
>> clients. You could argue that the logic is wrong in how the value is
>> chosen, but if the admin specifies the right value then it works just
>> fine.
>
> Whether it is a bug or not, does this behaviour exist in dhcp-4.0?
>
> Please inform.
>
> Thanks,
> Reissom
Did we ever see the dhcpd.conf file? My guess here is that
somewhere there is an "option subnet-mask" outside of the
subnet 10.0.200.0 netmask 255.255.254.0 {
range 10.0.200.10 10.0.201.254;
option broadcast-address 10.0.201.255;
option routers 10.0.200.1;
}
that is overriding the netmask part of the subnet statement,
perhaps in a group that the subnet statement is within. We've been
bit by this. What I do is to *never* use an "option subnet-mask"
statement, and just let the subnet statement handle it, *unless*
you have a subnet that needs a different mask, and then (and only
then) I assign it with "option subnet-mask".
--
Jeff Wieland | Purdue University
Network Systems Administrator | ITN&S Data Networks
Voice: (765)496-8234 | 501 Harrison Street
FAX: (765)494-6620 | West Lafayette, IN 47907-2025
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