diff --git a/of/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver13/OFGroupDescStatsReplyVer13.java b/of/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver13/OFGroupDescStatsReplyVer13.java
new file mode 100644
index 0000000..9faeb31
--- /dev/null
+++ b/of/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver13/OFGroupDescStatsReplyVer13.java
@@ -0,0 +1,412 @@
+// 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.ver13;
+
+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 com.google.common.collect.ImmutableSet;
+import java.util.List;
+import com.google.common.collect.ImmutableList;
+import org.jboss.netty.buffer.ChannelBuffer;
+import com.google.common.hash.PrimitiveSink;
+import com.google.common.hash.Funnel;
+
+class OFGroupDescStatsReplyVer13 implements OFGroupDescStatsReply {
+    private static final Logger logger = LoggerFactory.getLogger(OFGroupDescStatsReplyVer13.class);
+    // version: 1.3
+    final static byte WIRE_VERSION = 4;
+    final static int MINIMUM_LENGTH = 16;
+
+        private final static long DEFAULT_XID = 0x0L;
+        private final static Set<OFStatsReplyFlags> DEFAULT_FLAGS = ImmutableSet.<OFStatsReplyFlags>of();
+        private final static List<OFGroupDescStatsEntry> DEFAULT_ENTRIES = ImmutableList.<OFGroupDescStatsEntry>of();
+
+    // OF message fields
+    private final long xid;
+    private final Set<OFStatsReplyFlags> flags;
+    private final List<OFGroupDescStatsEntry> entries;
+//
+    // Immutable default instance
+    final static OFGroupDescStatsReplyVer13 DEFAULT = new OFGroupDescStatsReplyVer13(
+        DEFAULT_XID, DEFAULT_FLAGS, DEFAULT_ENTRIES
+    );
+
+    // package private constructor - used by readers, builders, and factory
+    OFGroupDescStatsReplyVer13(long xid, Set<OFStatsReplyFlags> flags, List<OFGroupDescStatsEntry> entries) {
+        this.xid = xid;
+        this.flags = flags;
+        this.entries = entries;
+    }
+
+    // Accessors for OF message fields
+    @Override
+    public OFVersion getVersion() {
+        return OFVersion.OF_13;
+    }
+
+    @Override
+    public OFType getType() {
+        return OFType.STATS_REPLY;
+    }
+
+    @Override
+    public long getXid() {
+        return xid;
+    }
+
+    @Override
+    public OFStatsType getStatsType() {
+        return OFStatsType.GROUP_DESC;
+    }
+
+    @Override
+    public Set<OFStatsReplyFlags> getFlags() {
+        return flags;
+    }
+
+    @Override
+    public List<OFGroupDescStatsEntry> getEntries() {
+        return entries;
+    }
+
+
+
+    public OFGroupDescStatsReply.Builder createBuilder() {
+        return new BuilderWithParent(this);
+    }
+
+    static class BuilderWithParent implements OFGroupDescStatsReply.Builder {
+        final OFGroupDescStatsReplyVer13 parentMessage;
+
+        // OF message fields
+        private boolean xidSet;
+        private long xid;
+        private boolean flagsSet;
+        private Set<OFStatsReplyFlags> flags;
+        private boolean entriesSet;
+        private List<OFGroupDescStatsEntry> entries;
+
+        BuilderWithParent(OFGroupDescStatsReplyVer13 parentMessage) {
+            this.parentMessage = parentMessage;
+        }
+
+    @Override
+    public OFVersion getVersion() {
+        return OFVersion.OF_13;
+    }
+
+    @Override
+    public OFType getType() {
+        return OFType.STATS_REPLY;
+    }
+
+    @Override
+    public long getXid() {
+        return xid;
+    }
+
+    @Override
+    public OFGroupDescStatsReply.Builder setXid(long xid) {
+        this.xid = xid;
+        this.xidSet = true;
+        return this;
+    }
+    @Override
+    public OFStatsType getStatsType() {
+        return OFStatsType.GROUP_DESC;
+    }
+
+    @Override
+    public Set<OFStatsReplyFlags> getFlags() {
+        return flags;
+    }
+
+    @Override
+    public OFGroupDescStatsReply.Builder setFlags(Set<OFStatsReplyFlags> flags) {
+        this.flags = flags;
+        this.flagsSet = true;
+        return this;
+    }
+    @Override
+    public List<OFGroupDescStatsEntry> getEntries() {
+        return entries;
+    }
+
+    @Override
+    public OFGroupDescStatsReply.Builder setEntries(List<OFGroupDescStatsEntry> entries) {
+        this.entries = entries;
+        this.entriesSet = true;
+        return this;
+    }
+
+
+        @Override
+        public OFGroupDescStatsReply build() {
+                long xid = this.xidSet ? this.xid : parentMessage.xid;
+                Set<OFStatsReplyFlags> flags = this.flagsSet ? this.flags : parentMessage.flags;
+                if(flags == null)
+                    throw new NullPointerException("Property flags must not be null");
+                List<OFGroupDescStatsEntry> entries = this.entriesSet ? this.entries : parentMessage.entries;
+                if(entries == null)
+                    throw new NullPointerException("Property entries must not be null");
+
+                //
+                return new OFGroupDescStatsReplyVer13(
+                    xid,
+                    flags,
+                    entries
+                );
+        }
+
+    }
+
+    static class Builder implements OFGroupDescStatsReply.Builder {
+        // OF message fields
+        private boolean xidSet;
+        private long xid;
+        private boolean flagsSet;
+        private Set<OFStatsReplyFlags> flags;
+        private boolean entriesSet;
+        private List<OFGroupDescStatsEntry> entries;
+
+    @Override
+    public OFVersion getVersion() {
+        return OFVersion.OF_13;
+    }
+
+    @Override
+    public OFType getType() {
+        return OFType.STATS_REPLY;
+    }
+
+    @Override
+    public long getXid() {
+        return xid;
+    }
+
+    @Override
+    public OFGroupDescStatsReply.Builder setXid(long xid) {
+        this.xid = xid;
+        this.xidSet = true;
+        return this;
+    }
+    @Override
+    public OFStatsType getStatsType() {
+        return OFStatsType.GROUP_DESC;
+    }
+
+    @Override
+    public Set<OFStatsReplyFlags> getFlags() {
+        return flags;
+    }
+
+    @Override
+    public OFGroupDescStatsReply.Builder setFlags(Set<OFStatsReplyFlags> flags) {
+        this.flags = flags;
+        this.flagsSet = true;
+        return this;
+    }
+    @Override
+    public List<OFGroupDescStatsEntry> getEntries() {
+        return entries;
+    }
+
+    @Override
+    public OFGroupDescStatsReply.Builder setEntries(List<OFGroupDescStatsEntry> entries) {
+        this.entries = entries;
+        this.entriesSet = true;
+        return this;
+    }
+//
+        @Override
+        public OFGroupDescStatsReply build() {
+            long xid = this.xidSet ? this.xid : DEFAULT_XID;
+            Set<OFStatsReplyFlags> flags = this.flagsSet ? this.flags : DEFAULT_FLAGS;
+            if(flags == null)
+                throw new NullPointerException("Property flags must not be null");
+            List<OFGroupDescStatsEntry> entries = this.entriesSet ? this.entries : DEFAULT_ENTRIES;
+            if(entries == null)
+                throw new NullPointerException("Property entries must not be null");
+
+
+            return new OFGroupDescStatsReplyVer13(
+                    xid,
+                    flags,
+                    entries
+                );
+        }
+
+    }
+
+
+    final static Reader READER = new Reader();
+    static class Reader implements OFMessageReader<OFGroupDescStatsReply> {
+        @Override
+        public OFGroupDescStatsReply readFrom(ChannelBuffer bb) throws OFParseError {
+            int start = bb.readerIndex();
+            // fixed value property version == 4
+            byte version = bb.readByte();
+            if(version != (byte) 0x4)
+                throw new OFParseError("Wrong version: Expected=OFVersion.OF_13(4), got="+version);
+            // fixed value property type == 19
+            byte type = bb.readByte();
+            if(type != (byte) 0x13)
+                throw new OFParseError("Wrong type: Expected=OFType.STATS_REPLY(19), got="+type);
+            int length = U16.f(bb.readShort());
+            if(length < MINIMUM_LENGTH)
+                throw new OFParseError("Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
+            if(bb.readableBytes() + (bb.readerIndex() - start) < length) {
+                // Buffer does not have all data yet
+                bb.readerIndex(start);
+                return null;
+            }
+            if(logger.isTraceEnabled())
+                logger.trace("readFrom - length={}", length);
+            long xid = U32.f(bb.readInt());
+            // fixed value property statsType == 7
+            short statsType = bb.readShort();
+            if(statsType != (short) 0x7)
+                throw new OFParseError("Wrong statsType: Expected=OFStatsType.GROUP_DESC(7), got="+statsType);
+            Set<OFStatsReplyFlags> flags = OFStatsReplyFlagsSerializerVer13.readFrom(bb);
+            // pad: 4 bytes
+            bb.skipBytes(4);
+            List<OFGroupDescStatsEntry> entries = ChannelUtils.readList(bb, length - (bb.readerIndex() - start), OFGroupDescStatsEntryVer13.READER);
+
+            OFGroupDescStatsReplyVer13 groupDescStatsReplyVer13 = new OFGroupDescStatsReplyVer13(
+                    xid,
+                      flags,
+                      entries
+                    );
+            if(logger.isTraceEnabled())
+                logger.trace("readFrom - read={}", groupDescStatsReplyVer13);
+            return groupDescStatsReplyVer13;
+        }
+    }
+
+    public void putTo(PrimitiveSink sink) {
+        FUNNEL.funnel(this, sink);
+    }
+
+    final static OFGroupDescStatsReplyVer13Funnel FUNNEL = new OFGroupDescStatsReplyVer13Funnel();
+    static class OFGroupDescStatsReplyVer13Funnel implements Funnel<OFGroupDescStatsReplyVer13> {
+        private static final long serialVersionUID = 1L;
+        @Override
+        public void funnel(OFGroupDescStatsReplyVer13 message, PrimitiveSink sink) {
+            // fixed value property version = 4
+            sink.putByte((byte) 0x4);
+            // fixed value property type = 19
+            sink.putByte((byte) 0x13);
+            // FIXME: skip funnel of length
+            sink.putLong(message.xid);
+            // fixed value property statsType = 7
+            sink.putShort((short) 0x7);
+            OFStatsReplyFlagsSerializerVer13.putTo(message.flags, sink);
+            // skip pad (4 bytes)
+            FunnelUtils.putList(message.entries, sink);
+        }
+    }
+
+
+    public void writeTo(ChannelBuffer bb) {
+        WRITER.write(bb, this);
+    }
+
+    final static Writer WRITER = new Writer();
+    static class Writer implements OFMessageWriter<OFGroupDescStatsReplyVer13> {
+        @Override
+        public void write(ChannelBuffer bb, OFGroupDescStatsReplyVer13 message) {
+            int startIndex = bb.writerIndex();
+            // fixed value property version = 4
+            bb.writeByte((byte) 0x4);
+            // fixed value property type = 19
+            bb.writeByte((byte) 0x13);
+            // length is length of variable message, will be updated at the end
+            int lengthIndex = bb.writerIndex();
+            bb.writeShort(U16.t(0));
+
+            bb.writeInt(U32.t(message.xid));
+            // fixed value property statsType = 7
+            bb.writeShort((short) 0x7);
+            OFStatsReplyFlagsSerializerVer13.writeTo(bb, message.flags);
+            // pad: 4 bytes
+            bb.writeZero(4);
+            ChannelUtils.writeList(bb, message.entries);
+
+            // update length field
+            int length = bb.writerIndex() - startIndex;
+            bb.setShort(lengthIndex, length);
+
+        }
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder b = new StringBuilder("OFGroupDescStatsReplyVer13(");
+        b.append("xid=").append(xid);
+        b.append(", ");
+        b.append("flags=").append(flags);
+        b.append(", ");
+        b.append("entries=").append(entries);
+        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;
+        OFGroupDescStatsReplyVer13 other = (OFGroupDescStatsReplyVer13) obj;
+
+        if( xid != other.xid)
+            return false;
+        if (flags == null) {
+            if (other.flags != null)
+                return false;
+        } else if (!flags.equals(other.flags))
+            return false;
+        if (entries == null) {
+            if (other.entries != null)
+                return false;
+        } else if (!entries.equals(other.entries))
+            return false;
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+
+        result = prime *  (int) (xid ^ (xid >>> 32));
+        result = prime * result + ((flags == null) ? 0 : flags.hashCode());
+        result = prime * result + ((entries == null) ? 0 : entries.hashCode());
+        return result;
+    }
+
+}