How to change DNS on for the DHCP server.

DNS is not working for DHCP

In the Juniper Mist portal or via CLI on the device:

1. Navigate to the DHCP Server or Relay configuration for the WAN Edge device.
2. Locate the DHCP server (network) for which you want to change the DNS servers.
3. Update the DNS Servers field with the new primary and secondary DNS IP addresses. You can specify up to three DNS servers in a comma-separated list.

For more information, please see the documentation here: https://www.juniper.net/documentation/us/en/software/mist/mist-wan/topics/topic-map/lan-config.html