Same bug for me: /etc/resolv.conf was pointing to /run/NetworkManager/resolv.conf rather than ../run/resolvconf/resolv.conf, as fixed by dpkg-reconfigure resolvconf.
Bug also confirmed by a bunch of other people: see https://askubuntu.com/questions/966870/dns-not-working-after-upgrade-17-04-to-17-10/967341 .
Same bug for me: /etc/resolv.conf was pointing to /run/NetworkMan ager/resolv. conf rather than ../run/ resolvconf/ resolv. conf, as fixed by dpkg-reconfigure resolvconf.
Bug also confirmed by a bunch of other people: see https:/ /askubuntu. com/questions/ 966870/ dns-not- working- after-upgrade- 17-04-to- 17-10/967341 .