-- binary
00 01 # type
00 3C # length
80 00 # oxm_list[0].class
05 10 # oxm_list[0].type_len - METADATA
FE DC BA 98 12 14 12 10 # oxm_list[0].value
FF FF FF FF 12 34 56 78 # oxm_list[0].mask
80 00 # oxm_list[1].class
08 06 # oxm_list[1].type_len - ETH_SRC
01 02 03 04 05 06 # oxm_list[1].value
80 00 # oxm_list[2].class
20 02 # oxm_list[2].type_len - UDP_DST
00 35 # oxm_list[2].value
80 00 # oxm_list[3].class
36 10 # oxm_list[4].type_len - IPV6_DST
12 12 12 12 12 12 12 12 # oxm_list[4].value
12 12 12 12 12 12 12 12 # ...
00 00 00 00 # pad
-- python
ofp.match([
    ofp.oxm.metadata_masked(0xFEDCBA9812141210, 0xFFFFFFFF12345678),
    ofp.oxm.eth_src([1,2,3,4,5,6]),
    ofp.oxm.udp_dst(53),
    ofp.oxm.ipv6_dst("\x12" * 16),
])
-- java
builder
       .setMasked(MatchField.METADATA, OFMetadata.ofRaw(0xFEDCBA9812141210l), OFMetadata.ofRaw(0xFFFFFFFF12345678l))
       .setExact(MatchField.ETH_SRC, MacAddress.of(new byte[] {1,2,3,4,5,6}))
       .setExact(MatchField.UDP_DST, TransportPort.of(53))
       .setExact(MatchField.IPV6_DST, IPv6Address.of(new byte[] { 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 
                                                                  0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12 }))