-- binary
04 12 # version, type
00 18 # length
12 34 56 78 # xid
ff ff # stats_type
00 00 # flags
00 00 00 00 # pad
00 5c 16 c7 # experimenter
00 00 00 1 # subtype
-- python
ofp.message.bsn_lacp_stats_request(
    xid=0x12345678,
    flags=0)
-- java
builder.setXid(0x12345678)
-- c
obj = of_bsn_lacp_stats_request_new(OF_VERSION_1_3);
of_bsn_lacp_stats_request_xid_set(obj, 0x12345678);