Our DHCP scope lease time is set for 24 hours. I am working on a project which requires me to point all DNS settings for our users to a new DNS server. I plan to have the DHCP change user’s DNS settings to point to a different DNS server once I make the modification in the DHCP scope. I plan to make the change on a Friday after business hours, so that when users come back Monday, they will have the new DNS settings. My question is if I change the DNS, and if I use my workstation to test it by rebooting my workstation shortly after the change, would it pick up the new DNS settings even though the lease time in DHCP is set for 24 hours? After making the change in DHCP, do I need to enforce anything or should the change take affect instantaneously? Once I make this change, I need to test it, so will rebooting my system after the change take effect instantaneously?