<![CDATA[DHCP to reserve the same IP withwin the pool]]>I have DHCP on my IOT network with Pool from: 192.168.20.20 to 192.168.20.250

It assigned 8 IPs to my IOT wifi plugs: 192.168.20.183 up to 192.168.20.190
That I successfully configured in Home Assistant

97571e36-4fff-4669-a451-9dbef340c176-image.png

Now since I will not use all of them immediately I will like to "lock them on their IP" .183 to .190 until I use them next time (maybe in months or years!!!)

if I add the device IP address to
a2e2bb33-a5f8-4d81-acc1-a659264de7c3-image.png
then it will tell me:
The IP address must not be within the DHCP range for this interface.

I am not sure what happens if I leave it BLANK

A the end of the day what should I do to keep their IPs for years?

Maybe Default lease time and Maximum lease time to UNLIMETED?

d27b9201-0b53-4d1f-890b-c2af3959d7f4-image.png

]]>https://forum.netgate.com/topic/178501/dhcp-to-reserve-the-same-ip-withwin-the-poolRSS for NodeWed, 22 Apr 2026 02:34:58 GMTSat, 04 Mar 2023 20:08:07 GMT60<![CDATA[Reply to DHCP to reserve the same IP withwin the pool on Sun, 05 Mar 2023 02:39:57 GMT]]>@john24634 See https://docs.netgate.com/pfsense/en/latest/services/dhcp/mappings-in-pools.html for the reasoning for this.

You can split your pool and create additional pools to use IPs in the middle.

]]>https://forum.netgate.com/post/1092221https://forum.netgate.com/post/1092221Sun, 05 Mar 2023 02:39:57 GMT<![CDATA[Reply to DHCP to reserve the same IP withwin the pool on Sun, 05 Mar 2023 02:19:04 GMT]]>@john24634 said in DHCP to reserve the same IP withwin the pool:

Can I set Default lease time and Maximum lease time to 5 years(157784630 seconds) for that mac addresses?

What would you achieve with that? If you use a static map, the device will always get the same address.

]]>https://forum.netgate.com/post/1092217https://forum.netgate.com/post/1092217Sun, 05 Mar 2023 02:19:04 GMT<![CDATA[Reply to DHCP to reserve the same IP withwin the pool on Sat, 04 Mar 2023 22:02:16 GMT]]>@john24634 said in DHCP to reserve the same IP withwin the pool:

Maybe Default lease time and Maximum lease time to UNLIMETED?

Can I set Default lease time and Maximum lease time to 5 years(157784630 seconds) for that mac addresses?

]]>https://forum.netgate.com/post/1092184https://forum.netgate.com/post/1092184Sat, 04 Mar 2023 22:02:16 GMT<![CDATA[Reply to DHCP to reserve the same IP withwin the pool on Sat, 04 Mar 2023 21:36:31 GMT]]>@john24634
If you want to reserve an address it has to be outside of the dhcp pool.
So either make the pool smaller, or use .2 through .19

]]>https://forum.netgate.com/post/1092179https://forum.netgate.com/post/1092179Sat, 04 Mar 2023 21:36:31 GMT<![CDATA[Reply to DHCP to reserve the same IP withwin the pool on Sat, 04 Mar 2023 21:09:40 GMT]]>@john24634 said in DHCP to reserve the same IP withwin the pool:

I am not sure what happens if I leave it BLANK

According to the image you posted, the device will get a regular DHCP address from within the pool.

]]>https://forum.netgate.com/post/1092176https://forum.netgate.com/post/1092176Sat, 04 Mar 2023 21:09:40 GMT