diff --git a/deploy_vm.conf b/deploy_vm.conf
index 7c15393..05f84fd 100644
--- a/deploy_vm.conf
+++ b/deploy_vm.conf
@@ -1,10 +1,17 @@
 # URL of the API
 URL="https://ipam.example.conf/api/${USER_IPAM}"
 
+# Bridge used by VMs
 VM_BRIDGE_DEV="vmbr99"
+
+# IPv6 gateway for the VM
 IPV6_GATEWAY="fe80::123:123:123:123"
 
-# ID of the ranges, you can put multiple ranges per AFI
+# If multiple DNS nameservers, seperate each of them vy a space
+DNS_NAMESERVERS_IPV4='1.2.3.4 2.3.4.5'
+DNS_NAMESERVERS_IPV6='1111:2222::3333 2222:3333::4444'
+
+# ID of the ranges, you can put multiple ranges per AFI, these values will be use to check if the new VM_ID is already registered or not in IPAM
 ID_RANGES_V4='123 234'
 ID_RANGES_V6='345'
 
@@ -12,11 +19,14 @@ ID_RANGES_V6='345'
 ID_RANGE_V4_TO_CREATE_VM='123'
 ID_RANGE_V6_TO_CREATE_VM='345'
 
+# Set the limit for possible disk size (Giga)
 VM_DISK_MIN=32
 VM_DISK_MAX=64
 
+# Set the limit for possible vCPU number
 VM_CPU_MIN=1
 VM_CPU_MAX=4
 
+# Set the limit for possible RAM size (Mega)
 VM_RAM_MIN=512
 VM_RAM_MAX=2048
diff --git a/deploy_vm.sh b/deploy_vm.sh
index 6fc34c8..9a836e9 100755
--- a/deploy_vm.sh
+++ b/deploy_vm.sh
@@ -29,7 +29,7 @@ if [ $1 ]; then
 		usage
 		exit 1
 	else
-		# Verification of the presence of VM conf file
+		# Check the presence of VM conf file
 		if [ -f "$1" ]; then
 			VM_CONF_FILE=$1
 			. ${VM_CONF_FILE}
@@ -348,14 +348,9 @@ echo "INFO : Get the FE80 IPv6 of the new VM..."
 VM_MAC=$(grep net0 /etc/pve/qemu-server/${VM_ID}.conf | cut -d '=' -f 2 | cut -d ',' -f 1)
 VM_FE80=$(ipv6calc --action prefixmac2ipv6 --in prefix+mac --out ipv6addr fe80:: $VM_MAC)
 
-VM_BRIDGE_DEV="vmbr1"
-
 # Define SSH host
 SSH_HOST="root@${VM_FE80}%${VM_BRIDGE_DEV}"
 
-echo "INFO : wait 2 minutes to be sure that ssh service is started"
-sleep 180
-
 # Create network configuration file for new VM
 echo "INFO : Create network configuration file for new VM..."
 echo "# This file describes the network interfaces available on your system
@@ -373,11 +368,12 @@ allow-hotplug ens18
 iface ens18 inet static
 	address ${VM_IPV4_NEW}/${VM_IPV4_NEW_SUBNET_MASK}
 	gateway ${VM_IPV4_NEW_SUBNET_GW}
-	dns-nameservers 89.234.186.5 89.234.186.4
+	dns-nameservers ${DNS_NAMESERVERS_IPV4}
  
 iface ens18 inet6 static
 	address	${RANGE_IPV6_NEW_WITHOUT_MASK}1/${RANGE_IPV6_NEW_MASK}
-	gateway	${IPV6_GATEWAY}" > /tmp/interfaces_vm${VM_ID}
+	gateway	${IPV6_GATEWAY}
+	dns-nameservers ${DNS_NAMESERVERS_IPV6}" > /tmp/interfaces_vm${VM_ID}
 
 # Replace network configuration file on new VM
 echo "INFO : Replace network configuration file on new VM... (VM NETWORK CONF UPDATE)"
@@ -405,12 +401,12 @@ if [ $? -ne 0 ]; then
 fi
 
 # Regenerate SSH host keys for the VM and restart SSHD
-#echo "INFO : Regenerate SSH host keys for the VM and restart SSHD..."
-#ssh ${SSH_OPT} ${SSH_HOST} "/bin/rm -v /etc/ssh/ssh_host_* && dpkg-reconfigure openssh-server && systemctl restart ssh" &> /dev/null
-#if [ $? -ne 0 ]; then
-#        echo 'ERROR : problem during regenerate SSH host keys for the VM, please finish manually the deploy OR delete VM and IPAM information'
-#        exit 1
-#fi
+echo "INFO : Regenerate SSH host keys for the VM and restart SSHD..."
+ssh ${SSH_OPT} ${SSH_HOST} "/bin/rm -v /etc/ssh/ssh_host_* && dpkg-reconfigure openssh-server && systemctl restart ssh" &> /dev/null
+if [ $? -ne 0 ]; then
+        echo 'ERROR : problem during regenerate SSH host keys for the VM, please finish manually the deploy OR delete VM and IPAM information'
+        exit 1
+fi
 
 # Get FingerPrint
 echo "INFO : Get SSH FingerPrint of the new VM..."
@@ -439,7 +435,6 @@ if [ "${VM_DISK_EXTEND}" -ne 0 ]; then
 	# Wait for system reboot
 	sleep 20
 	echo "INFO : wait 3 minutes to be sure that ssh service is started"
-sleep 180
 
 	echo "INFO : Create new PV... (pvcreate /dev/vda3)"
 
@@ -455,7 +450,7 @@ sleep 180
 	if [ $? -ne 0 ]; then
             echo 'ERROR : problem during get the name of the default VG'
             exit 1
-    fi
+	fi
 
 	echo "INFO : Add new PV to VG ${DEFAULT_VG}... (vgextend ${DEFAULT_VG} /dev/vda3)"
 
@@ -468,12 +463,12 @@ sleep 180
 
         echo "INFO : Resize LV on disk... (RESIZE VM LV)"
         
-    DEFAULT_LV_ROOT=$(find /dev/mapper -name '*root*')
+	DEFAULT_LV_ROOT=$(find /dev/mapper -name '*root*')
 
 	if [ $? -ne 0 ]; then
             echo 'ERROR : problem during get the name of the default root LV'
             exit 1
-    fi
+	fi
 
 	ssh ${SSH_OPT} ${SSH_HOST} "lvextend -l +100%FREE ${DEFAULT_LV_ROOT}" &> /dev/null
         
diff --git a/vm-template.conf b/vm-template.conf
index f285336..4ce11b6 100644
--- a/vm-template.conf
+++ b/vm-template.conf
@@ -8,14 +8,14 @@ USER_MAIL="user@example.net"
 # WARNING, if this value is incorrect, nobody could connect the deployed VM...
 USER_SSH_PUB_KEY="ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCZWqqdey/B95uiSAXJUFo56UHCsk5b3AxRw+SfnuOGyP15tGwOT4AhCyx2XXcxAlnuTNYhONfHg82wVN581suF3w2wnWkJdYqlwmCB20CQENuFXIIcw1ZYTyVcLfdSNhMAO1VuvkvyTEDac2Mh9epMe3lcgYpM/+YZiRfuInDYzixOJOuSz+NFMCm9XHhQDZ3CxZSMjKCV3+yW6vcQ/QfWs749C1JwdTiEMSrwpMm+IwtVnO5Tv4EA/jUs6a+CVo4GtfwIVWH5CGtrc4SYfbfFwoITS3UKDUGgx1YKU81bXrzldlofPxAAAAAAAAAA6n6orTu81pKRiok3oN/Vhuhb john@host"
 
-# Disk size in GB (ex : 32)
+# Disk size in Giga (ex : 32)
 VM_DISK=32
 
 # vCPU number (ex : 1)
 VM_CPU=1
 
-# RAM size in MB (ex : 512)
+# RAM size in Mega (ex : 512)
 VM_RAM=512
 
-# VM Proxmox ID of template (ex : 123)
+# VM Proxmox ID of template to use to create the new VM (ex : 123)
 VM_TEMPLATE_ID=123