The ProtoSupport is defined as follows:
typedef struct {
u_16 count;
u_16 length;
ProtoSupportEntry value[1];
} ProtoSupport;
typedef struct {
ApplProtoId appl_proto;
TransProtoId trans_proto;
u_16 port_number;
ProtoOptions options;
} ProtoSupportEntry;
typedef u_16 ApplProtoId;
#define AP_ID_ACSE 1
#define AP_ID_DATA_OUT 5
typedef u_16 TransProtoId;
#define TP_ID_UDP 1
typedef u_16 ProtoOptions;
#define P_OPT_WIRELESS 0x8000