diff --git a/dyn_announce_gw_bw.sh b/dyn_announce_gw_bw.sh
new file mode 100755
index 0000000..ca22d9f
--- /dev/null
+++ b/dyn_announce_gw_bw.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+gwsel_lockfile="/tmp/gwsel_lockfile"  # lockfile to allow for low bandwidth settings 
+
+if [ -z "$1" ]; then
+        echo
+        echo "usage: $0 <network-interface> <update_interval [sec]> <total BW up [Mbit/sec]> <total BW down [Mbit/sec]>"
+        echo
+        echo "e.g. $0 eth0 60 10 10"
+        echo
+        exit
+fi
+
+while true
+do
+    if [ ! -e ${gwsel_lockfile} ]; then    # lockfile not present
+        # Bandwidth currently used (time averaged)
+        R1=$(cat "/sys/class/net/$1/statistics/rx_bytes")
+        T1=$(cat "/sys/class/net/$1/statistics/tx_bytes")
+        sleep "$2"
+        R2=$(cat "/sys/class/net/$1/statistics/rx_bytes")
+        T2=$(cat "/sys/class/net/$1/statistics/tx_bytes")
+        TkbitPS=$(echo "scale=0; ($T2 - $T1) / 1024 * 8 / $2" | bc -l)
+        RkbitPS=$(echo "scale=0; ($R2 - $R1) / 1024 * 8 / $2" | bc -l)
+#        echo "BW used      -- up $1: $TkbitPS kBit/s; down $1: $RkbitPS kBit/s"
+
+        # Remaining bandwidth available; cut-off negative values
+        Tavail_kbitPS=$(echo "scale=0; if (($3 * 1024 - $TkbitPS) >0) ($3 * 1024 - $TkbitPS) else 0" | bc -l)
+        Ravail_kbitPS=$(echo "scale=0; if (($4 * 1024 - $RkbitPS) >0) ($4 * 1024 - $RkbitPS) else 0" | bc -l)
+#        echo "BW available -- up $1: $Tavail_kbitPS kBit/s; down $1: $Ravail_kbitPS kBit/s"
+    else                                     # lockfile present
+        Tavail_kbitPS=0
+        Ravail_kbitPS=0
+        sleep "$2"
+    fi
+
+    for bat in /sys/class/net/bat*; do
+              iface=${bat##*/}
+              batctl -m $iface gw_mode server "${Ravail_kbitPS}kbit/${Tavail_kbitPS}kbit" 
+    done
+done
diff --git a/dyn_announce_gw_bw_with-max-client-leases.sh b/dyn_announce_gw_bw_with-max-client-leases.sh
new file mode 100755
index 0000000..f88ea12
--- /dev/null
+++ b/dyn_announce_gw_bw_with-max-client-leases.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+gwsel_lockfile="/tmp/gwsel_lockfile"  # lockfile to allow for low bandwidth settings 
+
+if [ -z "$1" ]; then
+        echo
+        echo "usage: $0 <network-interface> <update_interval [sec]> <total BW up [Mbit/sec]> <total BW down [Mbit/sec]>"
+        echo
+        echo "e.g. $0 eth0 60 10 10"
+        echo
+        exit
+fi
+
+while true
+do
+    if [ ! -e ${gwsel_lockfile} ]; then    # lockfile not present
+        # Bandwidth currently used (time averaged)
+        R1=$(cat "/sys/class/net/$1/statistics/rx_bytes")
+        T1=$(cat "/sys/class/net/$1/statistics/tx_bytes")
+        sleep "$2"
+        R2=$(cat "/sys/class/net/$1/statistics/rx_bytes")
+        T2=$(cat "/sys/class/net/$1/statistics/tx_bytes")
+        TkbitPS=$(echo "scale=0; ($T2 - $T1) / 1024 * 8 / $2" | bc -l)
+        RkbitPS=$(echo "scale=0; ($R2 - $R1) / 1024 * 8 / $2" | bc -l)
+#        echo "BW used      -- up $1: $TkbitPS kBit/s; down $1: $RkbitPS kBit/s"
+
+        # Remaining bandwidth available; cut-off negative values
+        Tavail_kbitPS=$(echo "scale=0; if (($3 * 1024 - $TkbitPS) >0) ($3 * 1024 - $TkbitPS) else 0" | bc -l)
+        Ravail_kbitPS=$(echo "scale=0; if (($4 * 1024 - $RkbitPS) >0) ($4 * 1024 - $RkbitPS) else 0" | bc -l)
+#        echo "BW available -- up $1: $Tavail_kbitPS kBit/s; down $1: $Ravail_kbitPS kBit/s"
+    else                                     # lockfile present
+        Tavail_kbitPS=0
+        Ravail_kbitPS=0
+        sleep "$2"
+    fi
+
+    for bat in /sys/class/net/bat*; do
+              iface=${bat##*/}
+              batctl -m $iface gw_mode server "${Ravail_kbitPS}kbit/${Tavail_kbitPS}kbit" 
+    done
+
+    # Erlangen schalten wir die Gatewayselection zur Sicherheit bei 450 leases ab, damit noch etwas Puffer nach oben ist! 
+    leasecount=$(/usr/sbin/dhcp-lease-list --parsable --lease /var/lib/dhcp/dhcpd.leases 2>&1 | grep "10.50.100" | wc -l) 
+    if [ $leasecount -gt 250 ] 
+    then 
+        batctl -m bat0 gw_mode off 
+    fi
+done