diff --git a/libs/ip.bash b/libs/ip.bash
new file mode 100644
index 0000000..acc864b
--- /dev/null
+++ b/libs/ip.bash
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+function ip_to_hex ()
+{
+	if test -e "$1" ; then echo "Usage : $0 XXX.XXX.XXX.XXX" ; return ; fi
+	IFS='.' read -a array <<< "$1"
+	printf "%02X %02X %02X %02X \n" ${array[0]} ${array[1]} ${array[2]} ${array[3]}
+}
+
+function generate_mac_from_ip ()
+{
+	if test -e "$1" ; then echo "Usage : $0 hostname" ; return ; fi
+	IFS='.' read -a array <<< "$1"
+	printf "    IP HEXA : %02X %02X %02X %02X\n" ${array[0]} ${array[1]} ${array[2]} ${array[3]}
+	printf "        MAC : 52:54:00:%02X:%02X:%02X\n" ${array[1]} ${array[2]} ${array[3]}
+	printf "DHCP CONFIG : host $1	{ hardware ethernet 52:54:00:%02X:%02X:%02X; }\n" ${array[1]} ${array[2]} ${array[3]}
+}
+
+function generate_mac_from_hostname ()
+{
+	if test -e "$1" ; then echo "Usage : $0 hostname" ; return ; fi
+	IFS='.' read -a array <<< "$(ssh admin dig +search +short $1)"
+	printf "    IP HEXA : %02X %02X %02X %02X\n" ${array[0]} ${array[1]} ${array[2]} ${array[3]}
+	printf "        MAC : 52:54:00:%02X:%02X:%02X\n" ${array[1]} ${array[2]} ${array[3]}
+	printf "DHCP CONFIG : host $1	{ hardware ethernet 52:54:00:%02X:%02X:%02X; }\n" ${array[1]} ${array[2]} ${array[3]}
+}