LAN clients not getting IPv6 addresses

[jimwillsher]

Firstly, this is linked to this:

Confused by IPv6 on RUTx09 - no default route for IPv4 once IPv6 enabled

Hello, Glad to hear that it worked! As for LAN IPv6 connections, you’ll likely need to navigate to Network → LAN, edit the LAN zone, scroll down to the DHCP section, and under IPv6 tab change the RA and DHCPv6 services to Server mode: [image] This should be configured automatically unless it was changed manually. I would also suggest setting the DNS servers (not domains) to 2606:4700:4700::1111 (Cloudflare) and 2001:4860:4860::8888 (Google) in case there are any issues with the server obtai…

With excellent help from @Daumantas , I now have an IPv4 and IPv6 connection on my RUTx09, and I can ping IPv4 and IPv6 address from the CLL on the router.

However I can’t get DHCPv6 to work.

These are my settings on the LAN interface:

An IPv6 address is automatically assigned to the LAN correctly:

On my LAN devices however, I can’t get any IPv6 address, and on a Windows machine an ipconfig /renew6 times out.

However, if I manually assign an IP address and a gateway, I goet IPv6 connectivity:

Have I missed something?

Many thanks!

EDIT Running tcpdump, it looks like there are no RA packets from the router.

root@ubuntuplay:~# tcpdump -n -i ens33 icmp6
tcpdump: verbose output suppressed, use -v[v]… for full protocol decode
listening on ens33, link-type EN10MB (Ethernet), snapshot length 262144 bytes
19:00:51.862528 IP6 :: > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2a00:23ee:2778:527b::1, length 32
19:03:21.411394 IP6 2001:db8::f > ff02::1:ff00:a: ICMP6, neighbor solicitation, who has 2001:db8::a, length 32
19:03:21.440025 IP6 2001:db8::f > ff02::1:ff00:b: ICMP6, neighbor solicitation, who has 2001:db8::b, length 32
19:03:21.955596 IP6 2001:db8::f > ff02::1:ff00:a: ICMP6, neighbor solicitation, who has 2001:db8::a, length 32
19:03:21.955596 IP6 2001:db8::f > ff02::1:ff00:b: ICMP6, neighbor solicitation, who has 2001:db8::b, length 32
19:03:22.955609 IP6 2001:db8::f > ff02::1:ff00:a: ICMP6, neighbor solicitation, who has 2001:db8::a, length 32
19:03:22.955609 IP6 2001:db8::f > ff02::1:ff00:b: ICMP6, neighbor solicitation, who has 2001:db8::b, length 32
19:03:44.905309 IP6 fe80::265a:4cff:fe99:de11 > ff02::2: ICMP6, router solicitation, length 16
19:04:38.564322 IP6 fe80::c638:75ff:fe94:a7b6 > ff02::2: ICMP6, router solicitation, length 16
19:04:38.564322 IP6 fe80::c638:75ff:fe94:a7b6 > ff02::2: ICMP6, router solicitation, length 16
19:05:32.287311 IP6 2001:db8::f > ff02::1:ff00:a: ICMP6, neighbor solicitation, who has 2001:db8::a, length 32
19:05:32.311492 IP6 2001:db8::f > ff02::1:ff00:b: ICMP6, neighbor solicitation, who has 2001:db8::b, length 32
19:05:32.951772 IP6 2001:db8::f > ff02::1:ff00:a: ICMP6, neighbor solicitation, who has 2001:db8::a, length 32
19:05:32.951772 IP6 2001:db8::f > ff02::1:ff00:b: ICMP6, neighbor solicitation, who has 2001:db8::b, length 32
19:05:33.951954 IP6 2001:db8::f > ff02::1:ff00:a: ICMP6, neighbor solicitation, who has 2001:db8::a, length 32
19:05:33.951955 IP6 2001:db8::f > ff02::1:ff00:b: ICMP6, neighbor solicitation, who has 2001:db8::b, length 32