Hi, To check us web-sites we use https://en.internet.nl By one site we get a alert that the site is not the same on IPv6 and IPv4. "Verdict: Avaliable ports or offered headers of your website over IPv4 are not the same over IPv6. Test explanation: We compare the response and content received from your web server over IPv6 with that received over IPv4." My question is : why is the response different? can you configure different headers for IPv4 en 6? And Where? Thank you, Pascal