If wifi interface is not wlan0 then stick with the configuration

src/freedombone

   echo 'fi' >> $babel_script
   echo '' >> $babel_script
   echo "IFACE=$WIFI_INTERFACE" >> $babel_script
-  echo 'if grep -q "wlan1" /proc/net/dev; then' >> $babel_script
-  echo '    IFACE=wlan1' >> $babel_script
+  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $babel_script
+  echo '    if grep -q "wlan1" /proc/net/dev; then' >> $babel_script
+  echo '        IFACE=wlan1' >> $babel_script
+  echo '    fi' >> $babel_script
   echo 'fi' >> $babel_script
   echo '' >> $babel_script
   echo 'if [[ ! grep -q "$IFACE" /proc/net/dev || $1 == "stop" ]]; then' >> $babel_script
   echo "IFACE=$WIFI_INTERFACE" >> $batman_script
   echo 'EIFACE=eth0' >> $batman_script
   echo '' >> $batman_script
-  echo 'if grep -q "wlan1" /proc/net/dev; then' >> $batman_script
-  echo '    IFACE=wlan1' >> $batman_script
+  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $batman_script
+  echo '    if grep -q "wlan1" /proc/net/dev; then' >> $batman_script
+  echo '        IFACE=wlan1' >> $batman_script
+  echo '    fi' >> $batman_script
   echo 'fi' >> $batman_script
   echo '' >> $batman_script
   echo 'if [ -e /etc/default/batctl ]; then' >> $batman_script

src/freedombone-client

 VERSION="1.01"
 
 WIFI_CHANNEL=2
+WIFI_INTERFACE=wlan0
 
 # B.A.T.M.A.N settings
 BATMAN_CELLID='02:BA:00:00:03:01'
   echo '    fi' >> $babel_script
   echo 'fi' >> $babel_script
   echo '' >> $babel_script
-  echo 'IFACE=wlan0' >> $babel_script
-  echo 'if grep -q "wlan1" /proc/net/dev; then' >> $babel_script
-  echo '    IFACE=wlan1' >> $babel_script
+  echo "IFACE=$WIFI_INTERFACE" >> $babel_script
+  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $babel_script
+  echo '    if grep -q "wlan1" /proc/net/dev; then' >> $babel_script
+  echo '        IFACE=wlan1' >> $babel_script
+  echo '    fi' >> $babel_script
   echo 'fi' >> $babel_script
   echo '' >> $babel_script
   echo 'if [[ ! grep -q "$IFACE" /proc/net/dev || $1 == "stop" ]]; then' >> $babel_script
   echo '' >> $batman_script
   echo '# Ethernet bridge definition (bridged to bat0)' >> $batman_script
   echo 'BRIDGE=br-mesh' >> $batman_script
-  echo 'IFACE=wlan0' >> $batman_script
+  echo "IFACE=$WIFI_INTERFACE" >> $batman_script
   echo 'EIFACE=eth0' >> $batman_script
   echo '' >> $batman_script
-  echo 'if grep -q "wlan1" /proc/net/dev; then' >> $batman_script
-  echo '    IFACE=wlan1' >> $batman_script
+  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $batman_script
+  echo '    if grep -q "wlan1" /proc/net/dev; then' >> $batman_script
+  echo '        IFACE=wlan1' >> $batman_script
+  echo '    fi' >> $batman_script
   echo 'fi' >> $batman_script
   echo '' >> $batman_script
   echo 'if [ -e /etc/default/batctl ]; then' >> $batman_script