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Feature #11927

open

Allow DHCP not to serve a gateway - small fix

Added by Jori Huisman 4 months ago. Updated 3 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
DHCP (IPv4)
Target version:
-
Start date:
05/15/2021
Due date:
% Done:

0%

Estimated time:
1.00 h
Plus Target Version:
Release Notes:
Default

Description

Currently pfSense cannot serve dual homed machine on DHCP without giving both interfaces a default gateway as leaving the default gateway field empty means pfSense will send the firewall interface as default gateway. As jimp suggested either a checkbox to suppress sending a gateway or entering the word "none" into the gateway box to prevent the gateway from being supplied to clients will be an easy and adequate solution for dual or multi homed machines. More information can be found on: https://forum.netgate.com/topic/52221/how-to-configure-dhcp-server-to-not-assign-a-default-gateway

Actions #1

Updated by Jori Huisman 4 months ago

To add some clarity. The "none" option is available in the general config. However it is not on the static mapping page.

Actions #2

Updated by Marcos Mendoza 3 months ago

https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml

Router aka Gateway is DHCP option 3. You can override what's sent under Additional BOOTP/DHCP Options by specifying an empty string for option 3.

I don't see this as necessitating a specific GUI option given that there may be edge cases for many more DHCP options that get sent by default.

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