/**
 * |           |                                                            |
 * |-----------|------------------------------------------------------------|
 * | namespace |http://opcfoundation.org/UA/                                |
 * | nodeClass |DataType                                                    |
 * | name      |ManAddrIfSubtype                                            |
 * | isAbstract|false                                                       |
 */
export declare enum EnumManAddrIfSubtype {
    /**
     * Optional variable is not set.
     */
    None = 0,
    /**
     * Interface is not known.
     */
    Unknown = 1,
    /**
     * Interface based on the port-ref MIB object.
     */
    PortRef = 2,
    /**
     * Interface based on the system port number.
     */
    SystemPortNumber = 3
}