-- binary
06 09 # version, type
00 0c # length
12 34 56 78 # xid
00 02 # flags
ff ff # miss_send_len
-- java
builder
        .setXid(0x12345678)
        .setFlags(Sets.immutableEnumSet(OFConfigFlags.FRAG_REASM))
        .setMissSendLen(0xffff)
        .build()