Description
This article explains how to specify the outgoing interface for local DNS traffic.
Scope
FortiGate v6.2.4 and onwards.
Solution
From v6.2.4 onwards, it is possible to specify the outgoing interface for local DNS traffic under DNS configuration.
Use the following command.
config system dns
set interface-select-method specify
set interface <interface_name>
end
To remove the DNS interface and use the default:
config system dns
unset interface-select-method
end
It can be changed through GUI as well to a specific interface or SD-WAN. With the help of the below article, it can be changed:
Change/specify the outgoing interface for... - Fortinet Community
