command to list assigned dhcp addresses - Networking

Is there a command I can use to ask the dhcp server which addresses
have been assigned?

Thanks!

2007-01-6, 10:43(-08), anagnost68:
> Is there a command I can use to ask the dhcp server which addresses
> have been assigned?
[...]

Have a look at the lease database.

Something like /var/lib/dhcp3/dhcpd.leases

See dhcpd.leases(5) for details.

--
Stéphane

Stephane CHAZELAS wrote:
> 2007-01-6, 10:43(-08), anagnost68:
> > Is there a command I can use to ask the dhcp server which addresses
> > have been assigned?
> [...]
>
> Have a look at the lease database.
>
> Something like /var/lib/dhcp3/dhcpd.leases
>
> See dhcpd.leases(5) for details.
>
> --
> Stéphane

Thanks.

I don't seem to have those files. I only have these:

dhclient-eth0.leases dhclient.leases

2007-01-6, 12:48(-08), anagnost68:
>
> Stephane CHAZELAS wrote:
>> 2007-01-6, 10:43(-08), anagnost68:
>> > Is there a command I can use to ask the dhcp server which addresses
>> > have been assigned?
>> [...]
>>
>> Have a look at the lease database.
>>
>> Something like /var/lib/dhcp3/dhcpd.leases
>>
>> See dhcpd.leases(5) for details.
[...]
> I don't seem to have those files. I only have these:
>
> dhclient-eth0.leases dhclient.leases

Maybe I misunderstood what you asked. That solution I gave is,
on the machine hosting the DHCP server, a way to get the IP
addresses that the DHCP server has attributed to the clients that
requested IP addresses to it so far (and have not expired).
The full path of the lease database file should be given in the
dhcpd.leases page in the section 5 of the manual (man 5
dhcpd.lease), if not, then somewhere in your dhcp server
documentation.

If you want to know what IP addresses have been assigned to your
(client) machine by some (remote) DHCP server, then those files
(dhclientxxx) will probably do, but so will ifconfig.

--
Stéphane

>
> If you want to know what IP addresses have been assigned to your
> (client) machine by some (remote) DHCP server, then those files
> (dhclientxxx) will probably do, but so will ifconfig.

Thanks.

Actually I want to know what IP addresses the DHCP server has given out
for my whole network, not just my client machine...

2007-01-6, 17:43(-08), anagnost68:
>>
>> If you want to know what IP addresses have been assigned to your
>> (client) machine by some (remote) DHCP server, then those files
>> (dhclientxxx) will probably do, but so will ifconfig.
>
> Thanks.
>
> Actually I want to know what IP addresses the DHCP server has given out
> for my whole network, not just my client machine...

Then, as said, look up for its lease file.

Again, look at your dhcpd server documentation and
configuration. If it's not in the standard place for your dhcpd
implementation, then its path may be specified by the
configuration, look for lease-file-name in dhcpd.conf.

--
Stéphane