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Today's Topics:
1. No free leases (Alan Batie)
2. Re: No free leases (Greg Sloop <gr...@sloop.net>)
----------------------------------------------------------------------
Message: 1
Date: Tue, 23 Aug 2022 14:39:22 -0700
From: Alan Batie <a...@peak.org>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: No free leases
Message-ID: <3e6172de-385b-46e2-a8a6-857093660...@peak.org>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
I have a small test network and a dhcp server that was working for it
previously, and is currently working for other, similar, production
networks. After bringing the test network back up, the dhcp server is
saying "no free leases" for no apparent reason, and I'm hoping someone
can point me at the problem:
Config:
subnet 207.55.34.16 netmask 255.255.255.240 {
option routers 207.55.34.17;
option broadcast-address 207.55.34.31;
option domain-name-servers 69.59.192.61, 69.59.192.62;
pool {
max-lease-time 300; # 5 minutes for debugging
range 207.55.34.20 207.55.34.28;
}
}
All the leases are free:
lease 207.55.34.20 {
starts 3 2021/04/07 16:30:12;
ends 3 2021/04/07 16:35:12;
tsfp 3 2021/04/07 16:37:42;
atsfp 3 2021/04/07 16:37:42;
binding state free;
hardware ethernet 48:77:46:f9:5b:b0;
set vendor-string = "GS4220E.ONT.dslforum.org";
}
lease 207.55.34.25 {
starts 3 2021/04/07 16:35:22;
ends 3 2021/04/07 16:35:25;
tsfp 3 2021/04/07 16:35:25;
atsfp 3 2021/04/07 16:35:25;
binding state free;
hardware ethernet 48:77:46:f9:5b:b0;
}
lease 207.55.34.26 {
starts 3 2021/04/07 16:36:26;
ends 3 2021/04/07 16:36:29;
tsfp 3 2021/04/07 16:36:29;
atsfp 3 2021/04/07 16:36:29;
binding state free;
hardware ethernet 48:77:46:f9:5b:b0;
}
lease 207.55.34.24 {
starts 4 2022/01/06 22:14:35;
ends 4 2022/01/06 22:19:35;
binding state free;
hardware ethernet d0:76:8f:6f:dc:15;
set vendor-string = "GS4220E.ONT.dslforum.org";
}
lease 207.55.34.27 {
starts 6 2022/03/12 00:51:18;
ends 6 2022/03/12 00:56:18;
binding state free;
hardware ethernet 48:77:46:f9:5b:b0;
set vendor-string = "GS4220E.ONT.dslforum.org";
}
From the log file:
Aug 23 14:28:20 dhcp01-u dhcpd[3044108]: DHCPDISCOVER from
f8:85:f9:2b:87:19 via 207.55.34.17: network 207.55.34.16/28: no free leases
--
ALAN BATIE
Senior Systems Engineer
541-754-7325
alan.ba...@peakinternet.com <mailto:alan.ba...@peakinternet.com>
www.peakinternet.com <https://www.peakinternet.com>
PEAK Internet Logo
Empowering people and improving quality of life.
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------------------------------
Message: 2
Date: Tue, 23 Aug 2022 14:46:33 -0700
From: "Greg Sloop <gr...@sloop.net>" <gr...@sloop.net>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: No free leases
Message-ID:
<caajorqu73l0f7mxrtgrufqwkw7yt62sz1mmnd+w+vaihq_y...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
One place where I've seen it most is where you're using a dhcp "relay" and
the network the relay is on, doesn't match the subnet you have configured
to lease from.
(i.e. The relay is on 10.1.0.0/24 and the subnet configured on dhcpd is
10.2.0.0/24. So, yes, there ARE NO free leases in 10.1.0.0/24, because
there really aren't. It's a misleading question, since you'd expect it to
complain that you haven't configured 10.1.0.0/24.)
HTH
On Tue, Aug 23, 2022, 2:40 PM Alan Batie <a...@peak.org> wrote:
> I have a small test network and a dhcp server that was working for it
> previously, and is currently working for other, similar, production
> networks. After bringing the test network back up, the dhcp server is
> saying "no free leases" for no apparent reason, and I'm hoping someone
> can point me at the problem:
>
> Config:
>
> subnet 207.55.34.16 netmask 255.255.255.240 {
> option routers 207.55.34.17;
> option broadcast-address 207.55.34.31;
> option domain-name-servers 69.59.192.61, 69.59.192.62;
>
> pool {
> max-lease-time 300; # 5 minutes for debugging
> range 207.55.34.20 207.55.34.28;
> }
> }
>
> All the leases are free:
>
> lease 207.55.34.20 {
> starts 3 2021/04/07 16:30:12;
> ends 3 2021/04/07 16:35:12;
> tsfp 3 2021/04/07 16:37:42;
> atsfp 3 2021/04/07 16:37:42;
> binding state free;
> hardware ethernet 48:77:46:f9:5b:b0;
> set vendor-string = "GS4220E.ONT.dslforum.org";
> }
> lease 207.55.34.25 {
> starts 3 2021/04/07 16:35:22;
> ends 3 2021/04/07 16:35:25;
> tsfp 3 2021/04/07 16:35:25;
> atsfp 3 2021/04/07 16:35:25;
> binding state free;
> hardware ethernet 48:77:46:f9:5b:b0;
> }
> lease 207.55.34.26 {
> starts 3 2021/04/07 16:36:26;
> ends 3 2021/04/07 16:36:29;
> tsfp 3 2021/04/07 16:36:29;
> atsfp 3 2021/04/07 16:36:29;
> binding state free;
> hardware ethernet 48:77:46:f9:5b:b0;
> }
> lease 207.55.34.24 {
> starts 4 2022/01/06 22:14:35;
> ends 4 2022/01/06 22:19:35;
> binding state free;
> hardware ethernet d0:76:8f:6f:dc:15;
> set vendor-string = "GS4220E.ONT.dslforum.org";
> }
> lease 207.55.34.27 {
> starts 6 2022/03/12 00:51:18;
> ends 6 2022/03/12 00:56:18;
> binding state free;
> hardware ethernet 48:77:46:f9:5b:b0;
> set vendor-string = "GS4220E.ONT.dslforum.org";
> }
>
>
> From the log file:
>
> Aug 23 14:28:20 dhcp01-u dhcpd[3044108]: DHCPDISCOVER from
> f8:85:f9:2b:87:19 via 207.55.34.17: network 207.55.34.16/28: no free
> leases
>
>
> --
> ALAN BATIE
> Senior Systems Engineer
> 541-754-7325
> alan.ba...@peakinternet.com <mailto:alan.ba...@peakinternet.com>
> www.peakinternet.com <https://www.peakinternet.com>
>
> PEAK Internet Logo
> Empowering people and improving quality of life.
>
> --
> ISC funds the development of this software with paid support
> subscriptions. Contact us at https://www.isc.org/contact/ for more
> information.
>
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
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