diff --git a/install/ipv6on-custom.sh b/install/ipv6on-custom.sh
index a570088..274a838 100644
--- a/install/ipv6on-custom.sh
+++ b/install/ipv6on-custom.sh
@@ -16,8 +16,7 @@ sed -i '/net.ipv6.conf.lo.disable_ipv6/d' /etc/sysctl.conf
 echo "net.ipv6.conf.all.disable_ipv6 = 0" >> /etc/sysctl.conf
 echo "net.ipv6.conf.default.disable_ipv6 = 0" >> /etc/sysctl.conf
 echo "net.ipv6.conf.lo.disable_ipv6 = 0" >> /etc/sysctl.conf
-
-grep -qxF 'net.ipv6.conf.eth0.disable_ipv6 = 1' /etc/sysctl.conf || echo 'net.ipv6.conf.eth0.disable_ipv6 = 1' | sudo tee -a /etc/sysctl.conf
+echo "net.ipv6.conf.eth0.disable_ipv6 = 1" >> /etc/sysctl.conf
 
 # Aplicar los cambios de sysctl
 sysctl -p
@@ -30,20 +29,17 @@ update-grub
 echo "Reiniciando el sistema para aplicar los cambios..."
 #reboot
 
-cat > /tmp/completado.sh <<- "EOF"
+cat > /tmp/completado.sh << "EOF"
 #!/bin/bash
 while : ; do
 choix=$(whiptail --title "Script Proyect HP3ICC Esteban Mackay 73." --menu "Al finalizar el reinicio escriba menu-adn2 para configurar su servidor. / At the end of the reboot type menu-adn2 to configure your server." 13 46 2 \
 1 " Iniciar Reinicio / Start Reboot " 3>&1 1>&2 2>&3)
 exitstatus=$?
-#on recupere ce choix
-#exitstatus=$?
 if [ $exitstatus = 0 ]; then
     echo "Your chosen option:" $choix
 else
     echo "You chose cancel."; break;
 fi
-# case : action en fonction du choix
 case $choix in
 1)
 reboot