DHCP reservations and rebooting: WHY?

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gumpgump wrote:

There's a threat from 2020 that I can't reply to about this.

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I think you mean there is a thread from 2020 that you can't reply to. :)

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gumpgump wrote:

I find it annoying that in the year 2021 we have to reboot routers for a simple DHCP reservation change.  Perhaps it's with IPtables consistency?  Can someone comment more... I just feel like this is unnecessary; that is, I have managed ISC DHCP independently and it's a simple HUP of the server process to reload.   *shrug*

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When you add/edit/delete a DHCP reservation you don't need to click the "APPLY" button at the top of the page.  The change to DHCP will still be saved which you can test by moving to another page and then returning to "LAN Setup" and you'll see your changes have been saved.  You might need to reboot or disconnect/reconnect from WiFi on the device that should be using the DHCP reservation.

I think that when you click "APPLY" the firmware assumes you have made a change to the "LAN TCP/IP Setup" even if you haven't and so reboots the router so that the new IP Address range can take affect. That has been my experiance anyway.