Update: resolved - see (use SLAAC for WAn vs DHCPv6)
I can see a number of you are using IPv6 with Unifi router - can anyone assist?
Can any of you check if you can ping IPv6 hosts by SSH into your router
e.g. ping6 google.com
I have full IPv6 connectivity from clients on my LAN
However, I can't ping IPv6 sites from my Unifi router.
With opening up my firewall to IPv6 ICMP traffic I can ping internal IPv6 addresses (including the IPv6 of my routers VLAN interface), but can't ping the IPv6 of my WAN!
When I run a traceroute from a public site to my WAN IPv6 it seems to get stuck in YouFibres network
Traceroute to VLAN interface
Tracing route to 2a0e:1d47:xxxx:4500::1 [2a0e:1d47:xxxx:4500::1]...
| hop | rtt | rtt | rtt | | ip address | fully qualified domain name |
| 1 | 1 | 1 | 1 | | 2607:f0d0:2701:6c:ffff:ffff:ffff:ff7e | outbound.hexillion.com |
| 4 | * | 2 | 2 | | 2607:f0d0:2:2::316 | 6130.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 5 | 24 | 25 | * | | 2607:f0d0:2:2::2f1 | 1f20.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 8 | 111 | 111 | 111 | | 2607:f0d0:2:2::2f9 | 9f20.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 10 | 116 | 115 | 117 | | 2a0e:1d42:0:16::73 | |
| 11 | 113 | 113 | 113 | | 2a0e:1d40:0:16::95 | |
| 12 | 116 | 116 | 116 | | 2a0e:1d40:0:16::219 | |
| 13 | 117 | 117 | 117 | | 2a0e:1d47:xxxx:4500::1 | |
However, when I ping the IPv6 address assigned to my routers WAN port it stops at 2a0e:1d42:0:16::73 (which I believe is a router within your network)
Traceroute to my WAN interface
Tracing route to 2a0e:1d42:0:xx::56 [2a0e:1d42:0:xx::56]...
| hop | rtt | rtt | rtt | | ip address | fully qualified domain name |
| 1 | 1 | 1 | 1 | | 2607:f0d0:2701:6c:ffff:ffff:ffff:ff7e | outbound.hexillion.com |
| 2 | 13 | 21 | 14 | | 2607:f0d0:2700:1::22 | |
| 4 | 4 | 2 | 7 | | 2607:f0d0:2:2::318 | 8130.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 5 | * | 25 | * | | 2607:f0d0:2:2::2f1 | 1f20.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 7 | * | * | 112 | | 2607:f0d0:2:2::12f | f210.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 8 | 111 | 111 | 110 | | 2607:f0d0:2:2::2f9 | 9f20.0000.0000.0000.2000.2000.0d0f.7062.ip6.static.sl-reverse.com |
| 10 | 117 | 117 | 118 | | 2a0e:1d42:0:16::73 | |