DHCP leasequery reply for clients with fixed-address

[Kristian Pedersen]

Hi list,

We are testing DHCP LEASEQUERY from Cisco CMTS cable routers (set up to
use "standard" method instead of Cisco draft leasequery).

All our hosts are added as hosts with fixed-address using OMAPI, so
entries in dhcpd.leases look like this:

host mac5039559852ceip100064048144 {
   dynamic;
   hardware ethernet 50:39:55:98:52:ce;
   fixed-address 100.64.48.144;
}

It seems V. 4.1.1-P1 wont reply to DHCPLEASEQUERY for fixed-addresses:

Mar 15 11:52:27 cmdhcp1 dhcpd: Received DHCPv4 packet without client-id
option and empty hlen field.
Mar 15 11:52:27 cmdhcp1 dhcpd: data: "leased-address" configuration
directive: there is no lease associated with this client.
Mar 15 11:52:27 cmdhcp1 dhcpd: DHCPLEASEQUERY from 10.111.72.1 for IP
100.64.48.144
Mar 15 11:52:27 cmdhcp1 dhcpd: DHCPLEASEUNKNOWN to 10.111.72.1 for IP
100.64.48.144 (0 associated IPs)

If I manually define a pool with this one ip for this one mac, then it
works:

Mar 15 12:29:02 cmdhcp1 dhcpd: Received DHCPv4 packet without client-id
option and empty hlen field.
Mar 15 12:29:02 cmdhcp1 dhcpd: data: "leased-address" configuration
directive: there is no lease associated with this client.
Mar 15 12:29:02 cmdhcp1 dhcpd: DHCPLEASEQUERY from 10.111.72.1 for IP
100.64.48.144
Mar 15 12:29:02 cmdhcp1 dhcpd: DHCPLEASEACTIVE to 10.111.72.1 for IP
100.64.48.144 (0 associated IPs)

Is there a way to get leasequery replies for fixed-address hosts? Maybe
its fixed in a newer version?

Thanks in advance,

--
Kristian Pedersen
ASOM-Net
Systemadministrator
www.asom-net.dk
Telefon: [phone]

_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users

[Simon Hobson]

Kristian Pedersen <[hidden email]> wrote:

> All our hosts are added as hosts with fixed-address using OMAPI, so entries in dhcpd.leases look like this:
>
> host mac5039559852ceip100064048144 {
>  dynamic;
>  hardware ethernet 50:39:55:98:52:ce;
>  fixed-address 100.64.48.144;
> }
>
> It seems V. 4.1.1-P1 wont reply to DHCPLEASEQUERY for fixed-addresses:

I suspect this is because there is no lease created for fixed-address hosts - the server just bypasses all the lease logic and just offers the address. You might want to try using reserved leases (set the "reserved" flag on a lease), they go through the lease lifecycle - but just aren't allowed to be reallocated to another host.

_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users