diff --git a/fairmq/FairMQDevice.cxx b/fairmq/FairMQDevice.cxx
index 8131c5e9..933c9d3f 100644
--- a/fairmq/FairMQDevice.cxx
+++ b/fairmq/FairMQDevice.cxx
@@ -714,7 +714,7 @@ bool FairMQDevice::HandleMsgInput(const string& chName, const InputMsgCallback&
 
     if (Receive(input, chName, i) >= 0)
     {
-        return callback(input, 0);
+        return callback(input, i);
     }
     else
     {
diff --git a/fairmq/options/FairMQSuboptParser.cxx b/fairmq/options/FairMQSuboptParser.cxx
index d4d22a1a..cbc204ff 100644
--- a/fairmq/options/FairMQSuboptParser.cxx
+++ b/fairmq/options/FairMQSuboptParser.cxx
@@ -59,7 +59,7 @@ FairMQMap SUBOPT::UserParser(const vector<string>& channelConfig, const string&
             }
             else if (subopt >= 0 && value != nullptr)
             {
-                socketProperties.put(channelOptionKeys[subopt], value);
+                channelProperties.put(channelOptionKeys[subopt], value);
             }
         }
 
diff --git a/fairmq/options/FairMQSuboptParser.h b/fairmq/options/FairMQSuboptParser.h
index 5bb5ffe5..f09ae99a 100644
--- a/fairmq/options/FairMQSuboptParser.h
+++ b/fairmq/options/FairMQSuboptParser.h
@@ -59,6 +59,7 @@ struct SUBOPT
         SNDKERNELSIZE,
         RCVKERNELSIZE,
         RATELOGGING,    // logging rate
+        NUMSOCKETS,
         lastsocketkey
     };
 
@@ -73,6 +74,7 @@ struct SUBOPT
         /*[SNDKERNELSIZE] = */ "sndKernelSize",
         /*[RCVKERNELSIZE] = */ "rcvKernelSize",
         /*[RATELOGGING]   = */ "rateLogging",
+        /*[NUMSOCKETS]    = */ "numSockets",
         nullptr
     };
 
diff --git a/fairmq/plugins/DDS/DDS.cxx b/fairmq/plugins/DDS/DDS.cxx
index 4ba8f3a5..481552af 100644
--- a/fairmq/plugins/DDS/DDS.cxx
+++ b/fairmq/plugins/DDS/DDS.cxx
@@ -8,10 +8,14 @@
 
 #include "DDS.h"
 
+#include <boost/algorithm/string/join.hpp>
+#include <boost/algorithm/string/split.hpp>
+
 #include <termios.h> // for the interactive mode
 #include <poll.h> // for the interactive mode
 #include <sstream>
 #include <iostream>
+#include <cstdlib>
 
 using namespace std;
 
@@ -101,6 +105,13 @@ auto DDS::HandleControl() -> void
         // and propagate addresses of bound channels to DDS.
         FillChannelContainers();
 
+        LOG(DEBUG) << "$DDS_TASK_PATH: " << getenv("DDS_TASK_PATH");
+        LOG(DEBUG) << "$DDS_GROUP_NAME: " << getenv("DDS_GROUP_NAME");
+        LOG(DEBUG) << "$DDS_COLLECTION_NAME: " << getenv("DDS_COLLECTION_NAME");
+        LOG(DEBUG) << "$DDS_TASK_NAME: " << getenv("DDS_TASK_NAME");
+        LOG(DEBUG) << "$DDS_TASK_INDEX: " << getenv("DDS_TASK_INDEX");
+        LOG(DEBUG) << "$DDS_COLLECTION_INDEX: " << getenv("DDS_COLLECTION_INDEX");
+
         // start DDS service - subscriptions will only start firing after this step
         fService.start();
 
@@ -147,13 +158,12 @@ auto DDS::FillChannelContainers() -> void
     for (const auto& c : channelInfo)
     {
         string methodKey{"chans." + c.first + "." + to_string(c.second - 1) + ".method"};
-        string addressKey{"chans." + c.first + "." + to_string(c.second - 1) + ".address"};
         if (GetProperty<string>(methodKey) == "bind")
         {
             fBindingChans.insert(make_pair(c.first, vector<string>()));
             for (int i = 0; i < c.second; ++i)
             {
-                fBindingChans.at(c.first).push_back(GetProperty<string>(addressKey));
+                fBindingChans.at(c.first).push_back(GetProperty<string>(string{"chans." + c.first + "." + to_string(i) + ".address"}));
             }
         }
         else if (GetProperty<string>(methodKey) == "connect")
@@ -180,7 +190,26 @@ auto DDS::SubscribeForConnectingChannels() -> void
         try
         {
             LOG(debug) << "Received update for " << propertyId << ": key=" << key << " value=" << value;
-            fConnectingChans.at(propertyId).fDDSValues.insert(make_pair<string, string>(key.c_str(), value.c_str()));
+            vector<string> values;
+            boost::algorithm::split(values, value, boost::algorithm::is_any_of(","));
+            if (values.size() > 1)  // multiple bound channels received
+            {
+                int taskIndex = GetProperty<int>("dds-i");
+                if (taskIndex != -1)
+                {
+                    LOG(debug) << "adding connecting channel " << key << " : " << values.at(taskIndex);
+                    fConnectingChans.at(propertyId).fDDSValues.insert(make_pair<string, string>(key.c_str(), values.at(taskIndex).c_str()));
+                }
+                else
+                {
+                    LOG(error) << "multiple bound channels received, but no task index specified, only assigning the first";
+                    fConnectingChans.at(propertyId).fDDSValues.insert(make_pair<string, string>(key.c_str(), values.at(0).c_str()));
+                }
+            }
+            else // only one bound channel received
+            {
+                fConnectingChans.at(propertyId).fDDSValues.insert(make_pair<string, string>(key.c_str(), value.c_str()));
+            }
 
             // update channels and remove them from unfinished container
             for (auto mi = fConnectingChans.begin(); mi != fConnectingChans.end(); /* no increment */)
@@ -192,8 +221,7 @@ auto DDS::SubscribeForConnectingChannels() -> void
                     auto it = mi->second.fDDSValues.begin();
                     for (unsigned int i = 0; i < mi->second.fSubChannelAddresses.size(); ++i)
                     {
-                        string k = "chans." + mi->first + "." + to_string(i) + ".address";
-                        SetProperty<string>(k, it->second);
+                        SetProperty<string>(string{"chans." + mi->first + "." + to_string(i) + ".address"}, it->second);
                         ++it;
                     }
                     fConnectingChans.erase(mi++);
@@ -215,13 +243,9 @@ auto DDS::PublishBoundChannels() -> void
 {
     for (const auto& chan : fBindingChans)
     {
-        unsigned int index = 0;
-        for (const auto& i : chan.second)
-        {
-            LOG(debug) << "Publishing " << chan.first << "[" << index << "] address to DDS under '" << chan.first << "' property name.";
-            fDDSKeyValue.putValue(chan.first, i);
-            ++index;
-        }
+        string joined = boost::algorithm::join(chan.second, ",");
+        LOG(debug) << "Publishing " << chan.first << " bound addresses (" << chan.second.size() << ") to DDS under '" << chan.first << "' property name.";
+        fDDSKeyValue.putValue(chan.first, joined);
     }
 }
 
@@ -287,7 +311,7 @@ auto DDS::SubscribeForCustomCommands() -> void
         {
             {
                 // auto size = fHeartbeatSubscribers.size();
-                std::lock_guard<std::mutex> lock{fHeartbeatSubscriberMutex};
+                lock_guard<mutex> lock{fHeartbeatSubscriberMutex};
                 fHeartbeatSubscribers.insert(senderId);
             }
             fDDSCustomCmd.send("heartbeat-subscription: " + id + ",OK", to_string(senderId));
@@ -295,7 +319,7 @@ auto DDS::SubscribeForCustomCommands() -> void
         else if (cmd == "unsubscribe-from-heartbeats")
         {
             {
-                std::lock_guard<std::mutex> lock{fHeartbeatSubscriberMutex};
+                lock_guard<mutex> lock{fHeartbeatSubscriberMutex};
                 fHeartbeatSubscribers.erase(senderId);
             }
             fDDSCustomCmd.send("heartbeat-unsubscription: " + id + ",OK", to_string(senderId));
@@ -304,7 +328,7 @@ auto DDS::SubscribeForCustomCommands() -> void
         {
             {
                 // auto size = fStateChangeSubscribers.size();
-                std::lock_guard<std::mutex> lock{fStateChangeSubscriberMutex};
+                lock_guard<mutex> lock{fStateChangeSubscriberMutex};
                 fStateChangeSubscribers.insert(senderId);
             }
             fDDSCustomCmd.send("state-changes-subscription: " + id + ",OK", to_string(senderId));
@@ -315,7 +339,7 @@ auto DDS::SubscribeForCustomCommands() -> void
         else if (cmd == "unsubscribe-from-state-changes")
         {
             {
-                std::lock_guard<std::mutex> lock{fStateChangeSubscriberMutex};
+                lock_guard<mutex> lock{fStateChangeSubscriberMutex};
                 fStateChangeSubscribers.erase(senderId);
             }
             fDDSCustomCmd.send("state-changes-unsubscription: " + id + ",OK", to_string(senderId));
diff --git a/fairmq/plugins/DDS/DDS.h b/fairmq/plugins/DDS/DDS.h
index 335dea7a..2bb0eb76 100644
--- a/fairmq/plugins/DDS/DDS.h
+++ b/fairmq/plugins/DDS/DDS.h
@@ -90,13 +90,21 @@ class DDS : public Plugin
     std::chrono::milliseconds fHeartbeatInterval;
 };
 
+Plugin::ProgOptions DDSProgramOptions()
+{
+    boost::program_options::options_description options{"DDS Plugin"};
+    options.add_options()
+        ("dds-i", boost::program_options::value<int>()->default_value(-1), "Task index for chosing connection target (single channel n to m).");
+    return options;
+}
+
 REGISTER_FAIRMQ_PLUGIN(
     DDS,                                         // Class name
     dds,                                         // Plugin name (string, lower case chars only)
     (Plugin::Version{1,0,0}),                    // Version
     "FairRootGroup <fairroot@gsi.de>",           // Maintainer
     "https://github.com/FairRootGroup/FairRoot", // Homepage
-    fair::mq::Plugin::NoProgramOptions           // custom program options for the plugin
+    DDSProgramOptions                            // custom program options for the plugin
 )
 
 } /* namespace plugins */