diff --git a/of/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver12/OFOxmMetadataMaskedVer12.java b/of/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver12/OFOxmMetadataMaskedVer12.java
new file mode 100644
index 0000000..b35110d
--- /dev/null
+++ b/of/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver12/OFOxmMetadataMaskedVer12.java
@@ -0,0 +1,356 @@
+// Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior University
+// Copyright (c) 2011, 2012 Open Networking Foundation
+// Copyright (c) 2012, 2013 Big Switch Networks, Inc.
+// This library was generated by the LoxiGen Compiler.
+// See the file LICENSE.txt which should have been included in the source distribution
+
+// Automatically generated by LOXI from template of_class.java
+// Do not modify
+
+package org.projectfloodlight.openflow.protocol.ver12;
+
+import org.projectfloodlight.openflow.protocol.*;
+import org.projectfloodlight.openflow.protocol.action.*;
+import org.projectfloodlight.openflow.protocol.actionid.*;
+import org.projectfloodlight.openflow.protocol.bsntlv.*;
+import org.projectfloodlight.openflow.protocol.errormsg.*;
+import org.projectfloodlight.openflow.protocol.meterband.*;
+import org.projectfloodlight.openflow.protocol.instruction.*;
+import org.projectfloodlight.openflow.protocol.instructionid.*;
+import org.projectfloodlight.openflow.protocol.match.*;
+import org.projectfloodlight.openflow.protocol.oxm.*;
+import org.projectfloodlight.openflow.protocol.queueprop.*;
+import org.projectfloodlight.openflow.types.*;
+import org.projectfloodlight.openflow.util.*;
+import org.projectfloodlight.openflow.exceptions.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.Set;
+import org.jboss.netty.buffer.ChannelBuffer;
+import com.google.common.hash.PrimitiveSink;
+import com.google.common.hash.Funnel;
+
+class OFOxmMetadataMaskedVer12 implements OFOxmMetadataMasked {
+    private static final Logger logger = LoggerFactory.getLogger(OFOxmMetadataMaskedVer12.class);
+    // version: 1.2
+    final static byte WIRE_VERSION = 3;
+    final static int LENGTH = 20;
+
+        private final static OFMetadata DEFAULT_VALUE = OFMetadata.NONE;
+        private final static OFMetadata DEFAULT_VALUE_MASK = OFMetadata.NONE;
+
+    // OF message fields
+    private final OFMetadata value;
+    private final OFMetadata mask;
+//
+    // Immutable default instance
+    final static OFOxmMetadataMaskedVer12 DEFAULT = new OFOxmMetadataMaskedVer12(
+        DEFAULT_VALUE, DEFAULT_VALUE_MASK
+    );
+
+    // package private constructor - used by readers, builders, and factory
+    OFOxmMetadataMaskedVer12(OFMetadata value, OFMetadata mask) {
+        this.value = value;
+        this.mask = mask;
+    }
+
+    // Accessors for OF message fields
+    @Override
+    public long getTypeLen() {
+        return 0x80000510L;
+    }
+
+    @Override
+    public OFMetadata getValue() {
+        return value;
+    }
+
+    @Override
+    public OFMetadata getMask() {
+        return mask;
+    }
+
+    @Override
+    public MatchField<OFMetadata> getMatchField() {
+        return MatchField.METADATA;
+    }
+
+    @Override
+    public boolean isMasked() {
+        return true;
+    }
+
+    public OFOxm<OFMetadata> getCanonical() {
+        if (OFMetadata.NO_MASK.equals(mask)) {
+            return new OFOxmMetadataVer12(value);
+        } else if(OFMetadata.FULL_MASK.equals(mask)) {
+            return null;
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public OFVersion getVersion() {
+        return OFVersion.OF_12;
+    }
+
+
+
+    public OFOxmMetadataMasked.Builder createBuilder() {
+        return new BuilderWithParent(this);
+    }
+
+    static class BuilderWithParent implements OFOxmMetadataMasked.Builder {
+        final OFOxmMetadataMaskedVer12 parentMessage;
+
+        // OF message fields
+        private boolean valueSet;
+        private OFMetadata value;
+        private boolean maskSet;
+        private OFMetadata mask;
+
+        BuilderWithParent(OFOxmMetadataMaskedVer12 parentMessage) {
+            this.parentMessage = parentMessage;
+        }
+
+    @Override
+    public long getTypeLen() {
+        return 0x80000510L;
+    }
+
+    @Override
+    public OFMetadata getValue() {
+        return value;
+    }
+
+    @Override
+    public OFOxmMetadataMasked.Builder setValue(OFMetadata value) {
+        this.value = value;
+        this.valueSet = true;
+        return this;
+    }
+    @Override
+    public OFMetadata getMask() {
+        return mask;
+    }
+
+    @Override
+    public OFOxmMetadataMasked.Builder setMask(OFMetadata mask) {
+        this.mask = mask;
+        this.maskSet = true;
+        return this;
+    }
+    @Override
+    public MatchField<OFMetadata> getMatchField() {
+        return MatchField.METADATA;
+    }
+
+    @Override
+    public boolean isMasked() {
+        return true;
+    }
+
+    @Override
+    public OFOxm<OFMetadata> getCanonical()throws UnsupportedOperationException {
+        throw new UnsupportedOperationException("Property canonical not supported in version 1.2");
+    }
+
+    @Override
+    public OFVersion getVersion() {
+        return OFVersion.OF_12;
+    }
+
+
+
+        @Override
+        public OFOxmMetadataMasked build() {
+                OFMetadata value = this.valueSet ? this.value : parentMessage.value;
+                if(value == null)
+                    throw new NullPointerException("Property value must not be null");
+                OFMetadata mask = this.maskSet ? this.mask : parentMessage.mask;
+                if(mask == null)
+                    throw new NullPointerException("Property mask must not be null");
+
+                //
+                return new OFOxmMetadataMaskedVer12(
+                    value,
+                    mask
+                );
+        }
+
+    }
+
+    static class Builder implements OFOxmMetadataMasked.Builder {
+        // OF message fields
+        private boolean valueSet;
+        private OFMetadata value;
+        private boolean maskSet;
+        private OFMetadata mask;
+
+    @Override
+    public long getTypeLen() {
+        return 0x80000510L;
+    }
+
+    @Override
+    public OFMetadata getValue() {
+        return value;
+    }
+
+    @Override
+    public OFOxmMetadataMasked.Builder setValue(OFMetadata value) {
+        this.value = value;
+        this.valueSet = true;
+        return this;
+    }
+    @Override
+    public OFMetadata getMask() {
+        return mask;
+    }
+
+    @Override
+    public OFOxmMetadataMasked.Builder setMask(OFMetadata mask) {
+        this.mask = mask;
+        this.maskSet = true;
+        return this;
+    }
+    @Override
+    public MatchField<OFMetadata> getMatchField() {
+        return MatchField.METADATA;
+    }
+
+    @Override
+    public boolean isMasked() {
+        return true;
+    }
+
+    @Override
+    public OFOxm<OFMetadata> getCanonical()throws UnsupportedOperationException {
+        throw new UnsupportedOperationException("Property canonical not supported in version 1.2");
+    }
+
+    @Override
+    public OFVersion getVersion() {
+        return OFVersion.OF_12;
+    }
+
+//
+        @Override
+        public OFOxmMetadataMasked build() {
+            OFMetadata value = this.valueSet ? this.value : DEFAULT_VALUE;
+            if(value == null)
+                throw new NullPointerException("Property value must not be null");
+            OFMetadata mask = this.maskSet ? this.mask : DEFAULT_VALUE_MASK;
+            if(mask == null)
+                throw new NullPointerException("Property mask must not be null");
+
+
+            return new OFOxmMetadataMaskedVer12(
+                    value,
+                    mask
+                );
+        }
+
+    }
+
+
+    final static Reader READER = new Reader();
+    static class Reader implements OFMessageReader<OFOxmMetadataMasked> {
+        @Override
+        public OFOxmMetadataMasked readFrom(ChannelBuffer bb) throws OFParseError {
+            // fixed value property typeLen == 0x80000510L
+            int typeLen = bb.readInt();
+            if(typeLen != (int) 0x80000510)
+                throw new OFParseError("Wrong typeLen: Expected=0x80000510L(0x80000510L), got="+typeLen);
+            OFMetadata value = OFMetadata.read8Bytes(bb);
+            OFMetadata mask = OFMetadata.read8Bytes(bb);
+
+            OFOxmMetadataMaskedVer12 oxmMetadataMaskedVer12 = new OFOxmMetadataMaskedVer12(
+                    value,
+                      mask
+                    );
+            if(logger.isTraceEnabled())
+                logger.trace("readFrom - read={}", oxmMetadataMaskedVer12);
+            return oxmMetadataMaskedVer12;
+        }
+    }
+
+    public void putTo(PrimitiveSink sink) {
+        FUNNEL.funnel(this, sink);
+    }
+
+    final static OFOxmMetadataMaskedVer12Funnel FUNNEL = new OFOxmMetadataMaskedVer12Funnel();
+    static class OFOxmMetadataMaskedVer12Funnel implements Funnel<OFOxmMetadataMaskedVer12> {
+        private static final long serialVersionUID = 1L;
+        @Override
+        public void funnel(OFOxmMetadataMaskedVer12 message, PrimitiveSink sink) {
+            // fixed value property typeLen = 0x80000510L
+            sink.putInt((int) 0x80000510);
+            message.value.putTo(sink);
+            message.mask.putTo(sink);
+        }
+    }
+
+
+    public void writeTo(ChannelBuffer bb) {
+        WRITER.write(bb, this);
+    }
+
+    final static Writer WRITER = new Writer();
+    static class Writer implements OFMessageWriter<OFOxmMetadataMaskedVer12> {
+        @Override
+        public void write(ChannelBuffer bb, OFOxmMetadataMaskedVer12 message) {
+            // fixed value property typeLen = 0x80000510L
+            bb.writeInt((int) 0x80000510);
+            message.value.write8Bytes(bb);
+            message.mask.write8Bytes(bb);
+
+
+        }
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder b = new StringBuilder("OFOxmMetadataMaskedVer12(");
+        b.append("value=").append(value);
+        b.append(", ");
+        b.append("mask=").append(mask);
+        b.append(")");
+        return b.toString();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        OFOxmMetadataMaskedVer12 other = (OFOxmMetadataMaskedVer12) obj;
+
+        if (value == null) {
+            if (other.value != null)
+                return false;
+        } else if (!value.equals(other.value))
+            return false;
+        if (mask == null) {
+            if (other.mask != null)
+                return false;
+        } else if (!mask.equals(other.mask))
+            return false;
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+
+        result = prime * result + ((value == null) ? 0 : value.hashCode());
+        result = prime * result + ((mask == null) ? 0 : mask.hashCode());
+        return result;
+    }
+
+}