The original issue here (#933566), "Stopping resolvconf doesn't disable updates", has already been addressed (by switching to post-stop from pre-stop) so I will open a new bug report (#936835) about the additional measure of ignoring errors on enabling/disabling updates.
The original issue here (#933566), "Stopping resolvconf doesn't disable updates", has already been addressed (by switching to post-stop from pre-stop) so I will open a new bug report (#936835) about the additional measure of ignoring errors on enabling/disabling updates.