diff --git a/src/mad/sh/scripts_common.sh b/src/mad/sh/scripts_common.sh
index e194ae532d..730743340a 100644
--- a/src/mad/sh/scripts_common.sh
+++ b/src/mad/sh/scripts_common.sh
@@ -148,6 +148,33 @@ function exec_and_log
     fi
 }
 
+# Executes a command, if it fails returns error message and exits. Similar to
+# exec_and_log, except that it allows multiline commands.
+# If a second parameter is present it is used as the error message when
+# the command fails.
+function multiline_exec_and_log
+{
+    message=$2
+
+    EXEC_LOG_ERR=`bash -s 2>&1 1>/dev/null <<EOF
+export LANG=C
+export LC_ALL=C
+$1
+EOF`
+    EXEC_LOG_RC=$?
+
+    if [ $EXEC_LOG_RC -ne 0 ]; then
+        log_error "Command \"$1\" failed: $EXEC_LOG_ERR"
+
+        if [ -n "$2" ]; then
+            error_message "$2"
+        else
+            error_message "Error executing $1: $EXEC_LOG_ERR"
+        fi
+        exit $EXEC_LOG_RC
+    fi
+}
+
 # Like exec_and_log but does not exit on failure. Just sets the variable
 # ERROR to the error message.
 function exec_and_set_error
diff --git a/src/vmm_mad/exec/one_vmm_exec.rb b/src/vmm_mad/exec/one_vmm_exec.rb
index 9ef2a19ecf..75b30dd389 100755
--- a/src/vmm_mad/exec/one_vmm_exec.rb
+++ b/src/vmm_mad/exec/one_vmm_exec.rb
@@ -772,6 +772,13 @@ class ExecDriver < VirtualMachineDriver
         model = model.strip if !model.nil?
         model = "-" if model.nil?
 
+
+        net_drv = xml_data.elements["NET_DRV"]
+
+        net_drv = net_drv.text if !net_drv.nil?
+        net_drv = net_drv.strip if !net_drv.nil?
+        net_drv = "-" if net_drv.nil?
+
         action = VmmAction.new(self, id, :attach_nic, drv_message)
 
         steps=[
@@ -784,7 +791,7 @@ class ExecDriver < VirtualMachineDriver
             {
                 :driver     => :vmm,
                 :action     => :attach_nic,
-                :parameters => [:deploy_id, mac, source, model]
+                :parameters => [:deploy_id, mac, source, model, net_drv]
             },
             # Execute post-boot networking setup
             {
diff --git a/src/vmm_mad/remotes/kvm/attach_nic b/src/vmm_mad/remotes/kvm/attach_nic
index 7c4e539d9d..d37ef7b05e 100755
--- a/src/vmm_mad/remotes/kvm/attach_nic
+++ b/src/vmm_mad/remotes/kvm/attach_nic
@@ -21,14 +21,36 @@ source $(dirname $0)/../../scripts_common.sh
 
 DOMAIN=$1
 MAC=$2
-SOURCE=$3
-MODEL=$4
+BRIDGE=$3
+THE_MODEL=$4
+NET_DRV=$5
 
-ATTACH_ARGS="--domain $DOMAIN --type bridge --source $SOURCE --mac $MAC"
-
-if [ "$MODEL" != "-" ]; then
-    ATTACH_ARGS="$ATTACH_ARGS --model $MODEL"
+if [ "$THE_MODEL" != "-" ]; then
+    MODEL="<model type='$THE_MODEL'/>"
 fi
 
-exec_and_log "virsh --connect $LIBVIRT_URI attach-interface $ATTACH_ARGS" \
-    "Could not attach NIC ($MAC) to $DOMAIN"
+if [ "$NET_DRV" = "ovswitch" ]; then
+    VIRTUALPORT="<virtualport type='openvswitch'/>"
+fi
+
+DEVICE=$(cat <<EOF
+<interface type='bridge'>
+    <source bridge='$BRIDGE'/>
+    <mac address='$MAC'/>
+    $MODEL
+    $VIRTUALPORT
+</interface>
+EOF
+)
+
+ATTACH_CMD=$(cat <<EOF
+virsh --connect $LIBVIRT_URI attach-device $DOMAIN <(
+cat <<EOT
+$DEVICE
+EOT
+)
+EOF
+)
+
+multiline_exec_and_log "$ATTACH_CMD" \
+    "Could not attach $SOURCE ($TARGET) to $DOMAIN"
diff --git a/src/vmm_mad/remotes/vmware/attach_nic b/src/vmm_mad/remotes/vmware/attach_nic
index 51dc09e67b..885348a2ae 100755
--- a/src/vmm_mad/remotes/vmware/attach_nic
+++ b/src/vmm_mad/remotes/vmware/attach_nic
@@ -33,7 +33,7 @@ deploy_id = ARGV[0]
 mac       = ARGV[1]
 bridge    = ARGV[2]
 model     = ARGV[3]
-host      = ARGV[5]
+host      = ARGV[6]
 
 VIDriver::initialize(host, false)