mtu value from open-mesh

src/freedombone

   echo '    rfkill unblock $(rfkill list|awk -F: "/phy/ {print $1}") || true' >> $batman_script
   echo '' >> $batman_script
   echo '    ifconfig $IFACE down' >> $batman_script
-  echo '    ifconfig $IFACE mtu 1528' >> $batman_script
+  echo '    ifconfig $IFACE mtu 1532' >> $batman_script
   echo '    iwconfig $IFACE enc off' >> $batman_script
   echo '    iwconfig $IFACE mode ad-hoc essid $ESSID channel $CHANNEL' >> $batman_script
   echo '    sleep 1' >> $batman_script

src/freedombone-client

   echo '    rfkill unblock $(rfkill list|awk -F: "/phy/ {print $1}") || true' >> $batman_script
   echo '' >> $batman_script
   echo '    ifconfig $IFACE down' >> $batman_script
-  echo '    ifconfig $IFACE mtu 1528' >> $batman_script
+  echo '    ifconfig $IFACE mtu 1532' >> $batman_script
   echo '    iwconfig $IFACE enc off' >> $batman_script
   echo '    iwconfig $IFACE mode ad-hoc essid $ESSID channel $CHANNEL' >> $batman_script
   echo '    sleep 1' >> $batman_script