FW: dhcpd.leases file missing old lease IP after each dhcpd restart

[Fernando Soto]

Hi Kumar,

You may be hitting this issue that was fixed in dhcp 4.3.3:

- Move the check for a PID file and process to be before we rewrite the lease
file.  This avoids the possibility of starting a second instance of a
server which changes the current lease file confusing the first instance.
This check is only included if the admin hasn't disabled PID files.
  [ISC-Bugs #38078]
  [ISC-Bugs #38143]


Regards,
Fernando

On Thu, Nov 19, 2015 at 1:08 PM, Fernando Soto <fsoto at bluecatnetworks.com>
wrote:

>
>
>
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> *From:* dhcp-users-bounces at lists.isc.org [mailto:
> dhcp-users-bounces at lists.isc.org] *On Behalf Of *P N Kumar
> *Sent:* Thursday, November 19, 2015 10:24 AM
> *To:* dhcp-users at lists.isc.org
> *Subject:* dhcpd.leases file missing old lease IP after each dhcpd restart
>
>
>
> Hi All,
>
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>
> Please help me on this issue which I have been working since long time.
>
> We use ISC DHCP 4.2.8 server to assign fixed IP address to clients.
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> On the first config commit server leased out 6 IP address to 6 clients.
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> 4.4.4.1  to  4.4.4.6
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> When I restart 1st time  ,DHCP "/etc/init.d/dhcp-server restart", I can
> see all 6 leases exist in dhcpd.lease file
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> 2nd time restart misses first lease IP i.e. lease file has  4.4.4.2-4.4.4.6
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> 3rd time restart  lease file has  4.4.4.3-4.4.4.6
>
> ...
>
> ...
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> 5th time restart  lease file has  4.4.4.5-4.4.4.6
>
> 6th time restart  lease file has  4.4.4.6
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>
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> but I can still ping 4.4.4.1 (or any other missing IP) from DHCP server.
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> Has anyone seen this behavior?
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> Thanks for your help in advance.
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>
> -Kumar
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>
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