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typedef struct __NO_STRUCTPAD__ mon_msgheader_s {
    char	    bricktype[BRICKTYPE_LEN];	/* e.g. BIANCA/BRICK-XS */
    char	    sysname[SYSNAME_LEN];	/* system.sysName */
    unsigned char   version __NO_ALIGN__;	/* packet format version */
    unsigned char   packettype __NO_ALIGN__;	/* use packet_types_t defines */
    unsigned long   abstime __NO_ALIGN__;	/* sec after 1970 */
    unsigned short  deltatime __NO_ALIGN__;	/* msec since last packet */
    unsigned char   sequenceno __NO_ALIGN__;	/* sequence number */
    char	    auth[AUTH_LEN] __NO_ALIGN__;/* authentication token */
    unsigned char   misclen __NO_ALIGN__;	/* length of misc data field */
    /*
    misc data (optional),
    physical interface header and data      (mon_phyheader_t, N x mon_phydata_t)
    virtual ifc header and (optional!) data (mon_virheader_t, N x mon_virdata_t)
    */
} mon_msgheader_t;