[FS#3384] Description of "Local Service Only" in dhcp and dns page is confusing

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Harry Martin (systemdlete) 

Attached to Project - OpenWrt/LEDE Project
Summary - Description of "Local Service Only" in dhcp and dns page is confusing
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - 
  * Background

On the "DHCP and DNS" page of the graphical UI (LuCI), there is an option named "Local Service Only" with a description of the option.  The option reads as follows:

"Limit DNS service to subnets interfaces on which we are serving DNS."

This is a very confusing description of whatever it is this option is intended to do.  For comparison, this is a bit like saying "Delivery of food is only provided in locations where we provide food delivery."

There is an option in dnsmasq called "no-dhcp-interface" whose description is similar to the one provided for the option in question here; I am guessing that this might have been the intended treatment.

  * Version of openwrt:

OpenWrt 19.07.4 r11208-ce6496d796
 
  * Steps to reproduce:

See the option labeled "Local Service Only" on the LuCI page for "DHCP and DNS"

  * Expected results:

Option description should match an option or combination of options available in dnsmasq in a clear, non-circular fashion.

  * Actual results:

Uncertainty as to what this option is supposed to do, written in an obvious and intuitive manner.

  * Workaround:

Avoiding any use of this option until its meaning is clarified in the description.

  * Additional:

It may be that the intention was to implement something like the no-dhcp-interface option of dnsmasq.  I cannot tell from the UI, but the description as it stands seems to indicate that.   Hopefully, clarifying what this option actually does do will help avoid confusing user support issues.


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3384

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