This article offers wrong advice of disabling resolvconf. You shouldn't be doing that, since it's resolvconf that acts as an arbiter of resolvconf writes. Rdnss

This article offers wrong advice of disabling resolvconf. You shouldn't be doing that, since it's resolvconf that acts as an arbiter of resolvconf writes. Rdnssd in Debian, unfortunately, bypasses it, and it's a bug in the package.