-- binary
04 04 # version, type
00 18 # length
12 34 56 78 # xid
00 5c 16 c7 # experimenter
00 00 00 3b # subtype
00 00 00 01 # num_aux
00 00 00 00 # status
-- python
ofp.message.bsn_set_aux_cxns_reply(
    xid=0x12345678, num_aux=1, status=0)
-- java
builder.setXid(0x12345678)
        .setNumAux(1)
        .setStatus(0)
-- c
obj = of_bsn_set_aux_cxns_reply_new(OF_VERSION_1_3);
of_bsn_set_aux_cxns_reply_xid_set(obj, 0x12345678);
of_bsn_set_aux_cxns_reply_num_aux_set(obj, 1);
of_bsn_set_aux_cxns_reply_status_set(obj, 0);