[systemd-bugs] [Bug 90216] New: resolved: 216 adds extra dns servers even when FallbackDNS is non empty

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Apr 28 06:31:21 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=90216

            Bug ID: 90216
           Summary: resolved: 216 adds extra dns servers even when
                    FallbackDNS is non empty
           Product: systemd
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: systemd-bugs at lists.freedesktop.org
          Reporter: nheir.kim at gmail.com
        QA Contact: systemd-bugs at lists.freedesktop.org

When FallbackDNS is not empty in resolved.conf, resolved still adds defaults
fallback dns (8.8.8.8…) to resolv.conf.

For example :

// resolved.conf
[Resolve]
FallbackDNS=80.67.169.12 2001:910:800::12
-----
// resolv.conf
nameserver 2001:4860:4860::8888
nameserver 8.8.4.4
nameserver 2001:910:800::12
# Too many DNS servers configured, the following entries may be ignored.
nameserver 80.67.169.12
nameserver 8.8.8.8
nameserver 2001:4860:4860::8844
-----

Since the man say “FallbackDNS= […] If this option is not given, a compiled-in
list of DNS servers is used instead.” I assume that if FallbackDNS is not
empty, the compile-in list is not used.

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