Fix is_bridge() in case of empty type
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@ -32,8 +32,9 @@ is_bridge()
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{
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local name="$1"; shift
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local ifacedir="$(ifacedir_with_cache "$cachedir" "$name")"
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local iftype="$(read_iface_option "$ifacedir" TYPE)"
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if list_bridge_types | grep -qF "$(read_iface_option "$ifacedir" TYPE)"; then
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if [ -n "$iftype" ] && list_bridge_types | grep -qF "$iftype"; then
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true
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else
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if netdev_is_up "$name"; then
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