This fixes a regression of #900788 where services whose startup depend on name resolutions may fail due to bind9 not being ready (LP: #1899902)
The change also includes a regression autopkgtest test to ensure the unit behaves as expected.
This fixes a regression of #900788 where services whose startup depend on name resolutions may fail due to bind9 not being ready (LP: #1899902)
The change also includes a regression autopkgtest test to ensure the unit behaves as expected.