Comment # 3 on bug 960153 from Jonathan Kang

NetworkManager uses dnsmasq to handle the resolving, and that's why it
overrides any dns entry in resolv.conf.

Check this link[1] for how to preserve your DNS settings.

*[1] https://wiki.archlinux.org/index.php/Resolv.conf#Preserve_DNS_settings

Closing this as RESOLVED INVALID.