-- binary
04 0e # version, type
00 48 # length
12 34 56 78 # xid

fe dc ba 98 76 54 32 10 # cookie

ff 00 ff 00 ff 00 ff 00 # cookie_mask

03 # table_id
00 # _command
00 05 # idle_timeout
00 0a # hard_timeout
17 70 # priority

00 00 00 32 # buffer_id
00 00 00 06 # out_port

00 00 00 08 # out_group
00 00 # flags
00 00 # pad

00 01 # match.type
00 04 # match.length
00 00 00 00 # pad

00 01 # instructions[0].type
00 08 # instructions[0].length
04 # instructions[0].table_id
00 00 00 # pad

00 01 # instructions[1].type
00 08 # instructions[1].length
07 # instructions[1].table_id
00 00 00 # pad
-- python
ofp.message.flow_add(
    xid=0x12345678,
    cookie=0xFEDCBA9876543210,
    cookie_mask=0xFF00FF00FF00FF00,
    table_id=3,
    idle_timeout=5,
    hard_timeout=10,
    priority=6000,
    buffer_id=50,
    out_port=6,
    out_group=8,
    flags=0,
    match=ofp.match(oxm_list=[]),
    instructions=[
        ofp.instruction.goto_table(table_id=4),
        ofp.instruction.goto_table(table_id=7)])