Verified for Zesty/0.12.8~17.04.1 that as for Xenial there is no explicit DNS setting in use.
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-zesty/zesty/amd64/u/ubuntu-fan/20171204_153111_9f0eb@/log.gz
Verified for Zesty/0. 12.8~17. 04.1 that as for Xenial there is no explicit DNS setting in use.
https:/ /objectstorage. prodstack4- 5.canonical. com/v1/ AUTH_77e2ada1e7 a84929a74ba3b87 153c0ac/ autopkgtest- zesty/zesty/ amd64/u/ ubuntu- fan/20171204_ 153111_ 9f0eb@/ log.gz