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Today's Topics:
1. Re: Aw: Re: Re: Re: Re: Re: Re: ISC dhcp assigns ip addresses
outside dynamic range (Frank Ulherr)
2. Re: Aw: Re: Re: ISC dhcp assigns ip addresses outside
dynamic range (Frank Ulherr)
3. Re: Aw: Re: Re: ISC dhcp assigns ip addresses outside
dynamic range (perl-list)
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Message: 1
Date: Fri, 6 Jul 2018 16:22:52 +0200
From: Frank Ulherr <d...@ulherr.eu>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Aw: Re: Re: Re: Re: Re: Re: ISC dhcp assigns ip addresses
outside dynamic range
Message-ID: <dbefcf04-c653-4bd2-9ff4-f685281a4...@ulherr.eu>
Content-Type: text/plain; charset="us-ascii"
Hi!
> Am 06.07.2018 um 15:23 schrieb perl-list <perl-l...@network1.net>:
>
> I just had a thought ... is it possible that dhcpd has not been restarted
> since the config file has been modified? Perhaps the running config is not
> the same as that on the disk and 10.91.120.80 is still part of a dynamic
> range?
No, we change the configuration the first server, restart it. Then we copy the
configuration to the second server and restart it.
This problem did not occur the first time.
Regards,
Frank
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Message: 2
Date: Fri, 6 Jul 2018 19:21:27 +0200
From: Frank Ulherr <d...@ulherr.eu>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Aw: Re: Re: ISC dhcp assigns ip addresses outside
dynamic range
Message-ID: <f3de2a6f-f9aa-4644-905f-ee938f10a...@ulherr.eu>
Content-Type: text/plain; charset="us-ascii"
Hi!
> Am 06.07.2018 um 15:22 schrieb perl-list <perl-l...@network1.net>:
>
> I realize that this is possible, but it won't be passed to the failover peer
> in such a case. You have to use OMAPI to add it to both servers. It seems
> that this lease was handed out dynamically due to the log line about
> difficulty passing it to the failover peer.
The primary dhcp hands out an ip address, which is not in its dynamic range.
Then it sends this information to the secondary dhcp, which complains.
That is weird, because that is one of the primary purpose of a dhcp: Hand out
ips correctly.
>
> 'Jul 5 13:14:35 a-rl-dhcp1 dhcpd[20145]: bind update on 10.91.120.80 from
> dhcp-failover rejected: unknown IP address'
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Message: 3
Date: Fri, 6 Jul 2018 14:02:08 -0400 (EDT)
From: perl-list <perl-l...@network1.net>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Aw: Re: Re: ISC dhcp assigns ip addresses outside
dynamic range
Message-ID:
<1130123210.67172.1530900128429.javamail.zim...@network1.net>
Content-Type: text/plain; charset="utf-8"
In my experience, when an IP has been assigned by 'fixed-address' inside a host
statement (OMAPI or dhcpd.conf) it does NOT keep a lease for it in
dhcpd.leases. It does NOT inform the failover peer. If you attempt to release
such address, the DHCP server will log that the lease is not found.
Thats what is telling me that this was handed out dynamically. Thats why i
wondered about restarting after config change. Its like one of them has it
included in the range and the other does not hence why it is saying "unknown IP
address".
> From: "Frank Ulherr" <d...@ulherr.eu>
> To: "Users of ISC DHCP" <dhcp-users@lists.isc.org>
> Sent: Friday, July 6, 2018 1:21:27 PM
> Subject: Re: Aw: Re: Re: ISC dhcp assigns ip addresses outside dynamic range
> Hi!
> Am 06.07.2018 um 15:22 schrieb perl-list < [ mailto:perl-l...@network1.net |
> perl-l...@network1.net ] >:
>> I realize that this is possible, but it won't be passed to the failover peer
>> in
>> such a case. You have to use OMAPI to add it to both servers. It seems that
>> this lease was handed out dynamically due to the log line about difficulty
>> passing it to the failover peer.
> The primary dhcp hands out an ip address, which is not in its dynamic range.
> Then it sends this information to the secondary dhcp, which complains.
> That is weird, because that is one of the primary purpose of a dhcp: Hand out
> ips correctly.
>> ' Jul 5 13:14:35 a-rl-dhcp1 dhcpd[20145]: bind update on 10.91.120.80 from
>> dhcp-failover rejected: unknown IP address'
> _______________________________________________
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
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