Comment 4 for bug 1680811

It might make more sense to simply switch to using openresolv, which is a proper resolvconf implementation, which doesn't rely on this silly hard-coded list. Alternatively, you could just backport features one by one from openresolv, such as '-m 0 and '-x'.

But really, since openresolv has no downsides and only upsides, and Debian's homebaked resolvconf is rotting and has issues, you'd really be better off just removing Debian's resolvconf from Ubuntu and relying instead on openresolv.