Hello, I'm trying to get to grips with IPv6 and have signed up for the course at https://ipv6.he.net/certification/. The next step is to be able to serve a page from my VPS. To check the IPv6 is configured OK I'm trying to ping the google IPv6 test host from my (Ubuntu 14.04) VPS but it times out. Tracert6 output below. To start with I'm using auto configuration in /etc/network/interfaces: auto eth0 iface eth0 inet static address 85.119.82.179 netmask 255.255.248.0 gateway 85.119.80.1 iface eth0 inet6 auto I've echoed "1" to all the accept_ra / autoconf addresses. I have # ip -6 addr show dev eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000 inet6 2001:ba8:1f1:f379:455c:abb3:fd77:5e32/64 scope global temporary dynamic valid_lft 86272sec preferred_lft 14272sec inet6 2001:ba8:1f1:f379:216:5eff:fe00:7db/64 scope global dynamic valid_lft 86272sec preferred_lft 14272sec inet6 fe80::216:5eff:fe00:7db/64 scope link valid_lft forever preferred_lft forever Where the network part of the inet6 address matches the address for my VPS on the panel (although I've changed the host part for the email). # ip6tables -L Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all fe80::/10 anywhere ACCEPT ipv6-icmp anywhere anywhere ipv6-icmp router-advertisement Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT ipv6-icmp anywhere anywhere ipv6-icmp router-solicitation Extra info # ip -6 route show dev eth0 2001:ba8:1f1:f379::/64 proto kernel metric 256 expires 86350sec fe80::/64 proto kernel metric 256 default via fe80::fcff:ffff:feff:ffff proto ra metric 1024 expires 1750sec # ip -6 neighbor show dev eth0 2001:ba8:1f1:f379::1 lladdr fe:ff:ff:ff:ff:ff router REACHABLE fe80::fcff:ffff:feff:ffff lladdr fe:ff:ff:ff:ff:ff router REACHABLE # tracert6 ipv6.google.com traceroute to ipv6.l.google.com (2a00:1450:4013:c00::66) from 2001:ba8:1f1:f379:455c:abb3:fd77:5e32, 30 hops max, 60 bytes/packet 1 2001:ba8:1f1:f379::1 (2001:ba8:1f1:f379::1) 0.401 ms 0.292 ms 0.391 ms 2 * * * 3 * * * 4 * * * 5 * * * etc. Thank you for any pointers as to where to look. Chris