No free leases

[Greg Sloop <gregs@sloop.net>]

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 <alan at 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.batie at peakinternet.com <mailto:alan.batie at peakinternet.com>
> www.peakinternet.com <https://www.peakinternet.com>
>
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>
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