I have a linux mint server that I use as a media server. It reboots very infrequently, but when it does, the DNS only resolves ipv6 addresses. Something in the configuration is weird, and ping, curl and apt all fail if the url resolves to ipv4. When I run sudo nmcli con up mediaserver the DNS will then resolve ipv4 address. How do I set this up so that it does so automatically at boot?