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Guido Trotter authored
Currently we support querying for "mac" "ip" or "bridge", meaning "the one of the first nic. We are not checking that there is a first nic, though, and thus could incur in errors. This patch fixes it by returning "None" should there be no such nic, as it's done when explicitely asking for a nic via nic.<field>/<N> Signed-off-by: Guido Trotter <ultrotter@google.com> Reviewed-by: Iustin Pop <iustin@google.com>
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