dhclient: ISP's server won't answer unicast DHCPREQUEST anymore

[Steve Clark]

On 12/12/2011 08:41 AM, Steve Clark wrote:
> On 12/12/2011 07:35 AM, Steve Clark wrote:
>> On 12/12/2011 07:11 AM, Jiri Popelka wrote:
>>> On 12/12/2011 01:02 PM, Steve Clark wrote:
>>>> On 12/12/2011 03:15 AM, Jordan Russell wrote:
>>>>> A bizarre problem has appeared after upgrading from Fedora 14 to 15,
>>>>> which brought dhclient from 4.2.0-P2 to 4.2.1-P1.
>>>>>
>>>>> Since the upgrade (weeks ago), my ISP's DHCP server no longer responds
>>>>> to any of the unicast DHCPREQUEST packets sent by dhclient when it
>>>>> enters the RENEWING state. However, hours later, when dhclient reaches
>>>>> the REBINDING state and broadcasts instead, the server responds
>>>>> immediately, and the renewal succeeds.
>>>>>
>>>>>    DHCPREQUEST on eth1 to 10.72.0.1 port 67
>>>>>    DHCPREQUEST on eth1 to 10.72.0.1 port 67
>>>>>    DHCPREQUEST on eth1 to 10.72.0.1 port 67
>>>>>    [...]
>>>>>    DHCPREQUEST on eth1 to 255.255.255.255 port 67
>>>>>    DHCPACK from 10.72.0.1
Snip
>>>>> .
>>>> I see the same behavior on Fedora 12 with
>>>> dhclient-4.1.1-18.P1.fc12.x86_64
>>>>
>>>> ...
> I guess I should add that I am not using any dhclient.conf file.
>


Does anyone think this behavior is related to not having a dhclient.conf file?


Dec 14 05:50:25 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:50:43 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:51:04 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:51:23 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:51:30 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:51:41 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:51:49 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:52:02 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:52:22 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:52:36 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:52:49 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:53:03 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:53:16 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:53:25 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:53:38 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:53:50 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:54:00 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:54:21 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:54:29 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:54:45 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:54:59 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:55:08 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:55:21 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:55:38 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:55:51 joker dhclient[1829]: DHCPREQUEST on eth0 to 10.99.32.1 port 67
Dec 14 05:56:01 joker dhclient[1829]: DHCPREQUEST on eth0 to 255.255.255.255 port 67
Dec 14 05:56:01 joker dhclient[1829]: DHCPACK from 10.99.32.1
Dec 14 05:56:01 joker dhclient[1829]: bound to xx.xxx.xx.xxx -- renewal in 4160 seconds.



-- 
Stephen Clark
*NetWolves*
Sr. Software Engineer III
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com
http://www.netwolves.com
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