diff --git a/linux/next-build.sh b/linux/next-build.sh
index a53aac2..bb8ef2d 100755
--- a/linux/next-build.sh
+++ b/linux/next-build.sh
@@ -20,6 +20,7 @@
 
 builddir="$HOME/build/linux-next"
 date="$(date +%Y%m%d)"
+name="next-$date"
 
 # comment out on single cpu systems
 parallel="-j8"
@@ -31,7 +32,7 @@ parallel="-j8"
 
    # update / change branch
    git-fetch
-   git-checkout -b "next-${date}" "origin/master"
+   git-checkout -b "$name" "$name"
 
    # clean
    make $parallel clean
diff --git a/mac-adresses-csv-to-dhcpd.sh b/mac-adresses-csv-to-dhcpd.sh
new file mode 100755
index 0000000..a5520ca
--- /dev/null
+++ b/mac-adresses-csv-to-dhcpd.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+file="$1"
+sep=';'
+name='dryad'
+
+awk "-F$sep" 'BEGIN {
+      hc=1;
+   }
+
+   function mac2dp(mac)
+   {
+      i=0;
+      newmac=""
+      while (i < 5) {
+         newmac = sprintf("%s%s:",newmac,substr(mac,(1+i*2),2));
+         i++;
+      }
+      newmac = sprintf("%s%s",newmac,substr(mac,(1+i*2),2));
+      return newmac;
+   }
+
+   
+   /^S-09/
+   {
+      mac = mac2dp($2)
+      print "      host dryad" hc \
+         " {\n         hardware ethernet " mac
+            ";\n         fixed-address 192.168.54."
+            i
+            ";\n      }";
+      hc++;
+   }' < "$1"