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Today's Topics:
1. stuck up record in DNS (ivan nepryakhin)
2. Re: stuck up record in DNS (Simon Hobson)
----------------------------------------------------------------------
Message: 1
Date: Thu, 22 Aug 2019 17:25:34 +0300
From: ivan nepryakhin <nepryakhin.1...@gmail.com>
To: dhcp-users@lists.isc.org
Cc: koko...@speechpro.com
Subject: stuck up record in DNS
Message-ID:
<CAK=dxuxfsa21esmemj793cp6jc-kjukjyjpj0ayff2ao_3p...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
hi guys!
I'm encountered with a strange issue:
- host with the name host12-c12-1 one time requested and get the
address 10.10.10.12
- dhcpd correct doing records ( A and PTR ) in DNS
- BUT after host shutdown and in the file dhcpd.leases line "binding
state" become in the "free" - records A and PTR staying stuck in the base
of DNS.
from https://linux.die.net/man/5/dhcpd.conf#Dynamic%20Dns%20Updates
i thinking what DHCP- DDNS work in the next scheme:
- HOST doing request for ip address
- DHCP getting request and try write RR's A and PTR in DNS
- DHCP give out ip address and do a record in the file dhcpd.leases
- when time lease expire DHCP remove RR's A and PTR from DNS
Please give me vector for a searching or suggestion about mistakes.
Thanks!!
P.S unfortunately i can't upgrade my environment
Environment:
isc-dhcp42-server-4.2.6_1
bind-base-9.9.5_8
cuted of the file dhcpd.lease:
lease 10.10.10.12 {
starts 5 2019/08/09 11:00:47;
ends 5 2019/08/09 12:00:47;
tstp 5 2019/08/09 12:00:47;
cltt 5 2019/08/09 11:00:47;
binding state free;
hardware ethernet 18:10:2b:12:db:12;
uid "\001\010\000'\216G\220";
}
cuted from the file /etc/named/tsc/tsc.zone:
$TTL 1800 ; 30 minutes
host12-c12-1 A 10.10.10.12
TXT "00ffa9c88e143752544ac44exxxxxxxxxx"
cuted of the file dhcpd.conf:
## DDNS related configuration
ddns-update-style interim;
ddns-rev-domainname "in-addr.arpa.";
ddns-domainname "tsc.";
update-static-leases on;
group {
option routers 10.10.10.1;
ddns-hostname = host-decl-name;
update-optimization false;
update-conflict-detection false;
# example host
host host12 {
hardware ethernet 18:31:BF:xx:xx:xx;
fixed-address 10.10.10.111;
}
}
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Message: 2
Date: Thu, 22 Aug 2019 21:00:12 +0100
From: Simon Hobson <dh...@thehobsons.co.uk>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: stuck up record in DNS
Message-ID: <488e87f5-7364-4bfb-a486-777b80f6b...@thehobsons.co.uk>
Content-Type: text/plain; charset=us-ascii
ivan nepryakhin <nepryakhin.1...@gmail.com> wrote:
> I'm encountered with a strange issue:
It's normal operation, as I explained in my reply to the same question on 11th,
see https://lists.isc.org/pipermail/dhcp-users/2019-August/021730.html
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