dhcpleasequery problems - 4.2.2

[Jack Kielsmeier]

The time is set correctly, but this is within a Solaris 11 zone. Zones do
not have control over the system clock (only the global zone can do this).
Non-global zones can only query the time.

Perhaps I'm running into an issue with Solaris Zones and not the DHCP code.
I will have to do further investigation. Thank you for the assistance.

-
Jack Kielsmeier
netINS Systems Administrator
systems at netins.net


-----Original Message-----
From: dhcp-users-bounces+jackkiel=netins.net at lists.isc.org
[mailto:dhcp-users-bounces+jackkiel=netins.net at lists.isc.org] On Behalf Of
scott_stone at trendmicro.com
Sent: Monday, October 17, 2011 7:23 PM
To: dhcp-users at lists.isc.org
Subject: RE: dhcpleasequery problems - 4.2.2

Maybe a dumb question - is your system time set correctly?  Make sure NTP is
running/etc if not.  Make sure both members of your failover are synced to
NTP as well.. I could see how an incorrect clock/too-great clock skew
between the peers could cause an error like this, based on the line 492
contents.

====================
Scott Stone <scott_stone at trendmicro.com> Manager, DCS-RD Trend Micro, Inc.
http://www.trendmicro.com


-----Original Message-----
From: dhcp-users-bounces+scott_stone=trendmicro.com at lists.isc.org
[mailto:dhcp-users-bounces+scott_stone=trendmicro.com at lists.isc.org] On
Behalf Of Shawn Routhier
Sent: Tuesday, October 18, 2011 6:20 AM
To: Users of ISC DHCP
Subject: Re: dhcpleasequery problems - 4.2.2


On Oct 17, 2011, at 12:10 PM, Jack Kielsmeier wrote:

> Hello,
> 
> We are running ISC DHCP 4.2.2 in a redundant fashion (failover peer) 
> in Solaris 11 zones (compiled from source).
> 
> Recently, we have determined that we need to make use of the DHCP 
> leasequery option. In testing, we notice the following occurring in our
logs:
> 
> ------------ LOGS ------------
> 
> Oct 17 13:19:03 dhcp-dsm dhcpd: [ID 702911 local5.error] Impossible 
> condition at dhcpleasequery.c:492.
> Oct 17 13:19:09 dhcp-dsm dhcpd: [ID 702911 local5.error] Impossible 
> condition at dhcpleasequery.c:492.
> Oct 17 13:19:15 dhcp-dsm dhcpd: [ID 702911 local5.error] Impossible 
> condition at dhcpleasequery.c:492.
> Oct 17 13:19:21 dhcp-dsm dhcpd: [ID 702911 local5.error] Impossible 
> condition at dhcpleasequery.c:492.
> Oct 17 13:22:34 dhcp-dsm dhcpd: [ID 702911 local5.error] Impossible 
> condition at dhcpleasequery.c:492.
> Oct 17 13:22:39 dhcp-dsm dhcpd: [ID 702911 local5.error] Impossible 
> condition at dhcpleasequery.c:492.
> 
> ------------ END LOGS ------------
> 
I think you want line 492 not 432

> Line 432 looks like this:
> 
> lease_dereference(&lease, MDL);
> 
> 

Line 492 deals with checking the lease ends time against the current time.
It also appears to have a bug.  I'll have to go look at the history to
figure out what it thinks it's doing.

It appears that you can simply remove the code from 490 to 498
	if (time_expiry < cur_time {
		stuff
	}

But I haven't tested that or verified that the time_expiry isn't being used
in some odd way I don't understand yet.  If you do test it we would be
interested in the results.

> Any assistance with this matter would be greatly appreciated. I do not 
> know what else to provide (such as the entire dhcpd.conf file, which 
> is pretty long).
> 
> Thank You,
> 
> -
> Jack Kielsmeier
> netINS Systems Administrator
> systems at netins.net
> 



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