You use the no (network options) command to set the network attributes.

Network attributes Command
Print a list of all configurable attributes no -a
Set attribute back to its default value no -d attribute
Display the value of an attribute no -o attribute
Change the value of an attribute no -o attribute=NewValue

When change the attributes with the no command, it is not a permanent change, that is, the changed attributes are lost when you reboot. To make sure that the changes are permanent, add them to the /etc/ file.

Note: The no command does no range checking. If inappropriate attribute values are set, the system could become inoperable.