Force dhclient to always provide a unique IP from the available pool

Asked Mar 02 '19 at 14:23

Active Mar 02 '19 at 14:23

Viewed 40 times

I'm running RHEL 7.4 and the dhcpd is controlled by DD-WRT off my router.

Tried to use:

dhclient -r; dhclient -x; rm -f /var/lib/dhclient.leases; ip a; dhclient -v

but it either returns the same IP or one of two IP's. I couldn't get it to return anything more. I did check the dhcpd configuration I've done and the range is as defined: 192.168.0.100-255 .

I need dhclient to assign a different IP from the DHCP pool each time I run it.

How could I achieve that? The only way I can think of doing so is by running nmap on the subnet to determine what IP's are free but that will have it's own shortcomings.

Cheers,

asked Mar 02 '19 at 14:23

xBlender

There's very little support we can provide for DD-WRT, which is where you would have to make any changes as it's your DHCP server. – Michael Hampton Mar 02 '19 at 14:29
If I run my own DHCPD server, what would you guys advise? – xBlender Mar 02 '19 at 16:00
Can I configure a standard DHCPD to always return a unique IP, regardless of the same MAC being used? – xBlender Mar 03 '19 at 17:17

Force dhclient to always provide a unique IP from the available pool

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