56373744b4
resolvconf prefers a locally running BIND resolver over the forwarders; we just have to tell it whether we have one or not. We use 'config.services.bind.enable' to make that decision, assuming that people are not going to configure a local BIND that won't respond to queries on 127.0.0.1. If we run into such a (weird) case, then we'll need to introduce another variable for that purpose which can be set independently from 'config.services.bind.enable'.
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