Test IPv6 only

urbanecm@notebook ~
$ host nebezi.cz
nebezi.cz has IPv6 address 2001:1528:132:70::ebe2
nebezi.cz mail is handled by 0 www.nebezi.cz.
urbanecm@notebook ~
$ ifconfig | grep inet
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        inet 10.10.61.78  netmask 255.0.0.0  broadcast 10.255.255.255
        inet6 fe80::dd6b:d6b6:5f6f:6f81  prefixlen 64  scopeid 0x20<link>
urbanecm@notebook ~
$ wget -O- -o /dev/null http://nebezi.cz
urbanecm@notebook ~
$ ssh titanium host nebezi.cz
nebezi.cz has IPv6 address 2001:1528:132:70::ebe2
nebezi.cz mail is handled by 0 www.nebezi.cz.
urbanecm@notebook ~
$ ssh titanium ifconfig | grep inet
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          inet addr:127.0.0.2  P-t-P:127.0.0.2  Bcast:0.0.0.0  Mask:255.255.255.255
          inet6 addr: 2a01:430:17:1::ffff:592/128 Scope:Global
          inet addr:37.205.10.148  P-t-P:37.205.10.148  Bcast:37.205.10.148  Mask:255.255.255.255
urbanecm@notebook ~
$ ssh titanium wget -O- -o /dev/null http://nebezi.cz | head
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Neběží.cz</title>
<meta name="description" content="Server, který na IPv4 neběží. Pokud se vám načte, znamená to, že máte funkční připojení pomocí protokolu IPv6.">
<meta name="theme-color" content="#119c20">
<meta name="msapplication-navbutton-color" content="#119c20">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="#119c20">
urbanecm@notebook ~
$