Not much is known about this packet, its structure and its documentation was taken from PvPGN.

The collected information can be found here and below:

/******************************************************/
/* D2 packet... not sent very often and the client doesn't
 * seem to expect an answer */
/* FIXME: what the hell does this one do? */
/*
FF 39 13 00 42 65 74 61   57 65 73 74 2C 62 75 73    .9..BetaWest,bus
74 61 00                                             ta.

this one was sent after a closed character was deleted on the auth
server... maybe a notifier for the gateway server?
FF 39 17 00 42 6F 62 73   57 6F 72 6C 64 2C 63 68    .9..BobsWorld,ch
61 72 6E 61 6D 65 00                                 arname.
*/
#define CLIENT_UNKNOWN_39 0x39ff
typedef struct
{
    t_bnet_header h;
    /* character name */ /* what about open chars? */
} PACKED_ATTR() t_client_unknown_39;
/******************************************************/