889a1b9f4e
"resolvectl status" shows per-link DNS servers separately from global ones. When querying the global list, it will contain both per-link and global servers however. Thus, to not show duplicate info we filter all entries that actually have a non-zero ifindex set (under the assumption that that's a per-link server). This doesn't work if people configured 127.0.0.1 as global server though, as we'll add ifindex 1 to it since 6e32414a66ff8dbcef233981a7066684d903ee9f unconditionally even for global servers. Let's address that by excluding entries with ifindex 1 from suppression. This is safe as resolved ignores loopback ifaces, hence never will have per-link servers on ifindex 1. Note that this splits up the "with_ifindex" parameter into a second parameter "only_global", since they semantically do two different things. One controls whether we shall expect/parse an ifindex dbus field. The other controls whether we shall filter all ifindex values set != 0. These are effectively always used in conjunction hence making them the same actually worked. However this is utterly confusing I think, which as I guess is resulting in the confusion around #25796 (which removes the whole check) Replaces: #25796
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