How to setup ipv6 on Proxmox on Naranja.tech server? They only give a:b:c:d::1/64 in their panel.

stoned

Naranja.tech server, I am trying to setup ipv6, they give only a subnet like a:b:c:d::1/64 in their panel. How would I find out the gateway for it?

They don't seem to have any other documentation available.

dosai

Ticket and ask them?

nullnothere

The gateway will be a:b:c::1 (the /48).

You can do something like:

ip -6 route add a:b:c::1 dev eth0
ip -6 route add default via a:b:c::1

stoned

Oh it's the /48. I got it now. Thanks! I opened a ticket for nothing. I'll close it. Don't like to bother support people too much so I asked here first. Much appreciated. It's good now.

stoned

I've installed proxmox on the server. I've got ipv6 and gateway. I can ping6 google from within the host.

I setup lxc container
I give it another ipv6, like a:b:c:d::2/64, I set gateway as a:b:c::1

I get Destination unreachable: Address unreachable

So I installed ndppd on the host, thinking they may not be routing at their end, configured ndppd to route, created a ::2 on their panel in the subnet as another ip, gave the ::2 ip to the container with ::1 as the gateway, and I get address unreachable.

Host can ping container ipv6
The container cannot ping the host ipv6 at ::1.

Anyone have idea of how naranja.tech ipv6 routes?

Maounique

Check if forwarding is working for ipv6. Also, how did you bridge the VM? PM me your config to take a look.

stoned

auto lo
iface lo inet loopback

iface ens3 inet manual

auto vmbr0
iface vmbr0 inet static
        address 1.2.3.4/24
        gateway 1.2.3.1
        bridge-ports ens3
        bridge-stp off
        bridge-fd 0

iface vmbr0 inet6 static
        address a:b:c:d::ffff/128
        gateway a:b:c::1

        post-up sleep 5; ip -6 route add a:b:c::1 dev vmbr0
        post-up sleep 5; ip -6 route add default via a:b:c::1

        pre-down ip -6 route del default via a:b:c::1
        pre-down ip -6 route del a:b:c::1 dev vmbr0

        post-up echo 1 > /proc/sys/net/ipv6/conf/all/proxy_ndp
        post-up echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
        post-up echo 1 > /proc/sys/net/ipv6/conf/default/forwarding

auto vmbr1
iface vmbr1 inet static
        address 192.168.1.0/24

        bridge-ports none
        bridge-stp off
        bridge-fd 0

        post-up echo 1 > /proc/sys/net/ipv4/ip_forward
        post-up iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o vmbr0 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s 192.168.1.0/24 -o vmbr0 -j MASQUERADE

iface vmbr1 inet6 static
        address a:b:c:d::1/64

vmbr0 at a:b:c:d::ffff
vmbr1 at a:b:c:d::1

Attatch containers/VMs to vmbr1, use any ipv6 in your /64, and use vmbr1's ipv6 a:b:c:d::1 as the gateway.

Then use ndppd: /etc/ndppd.conf

route-ttl 30000
proxy vmbr0 {
        router yes
        timeout 500
        ttl 30000
        rule a:b:c:d::/64    {
                static
        }
}

This in sysctl.conf

net.ipv6.conf.all.autoconf=0
net.ipv6.conf.all.accept_ra=0
net.ipv4.ip_forward=1
net.ipv6.conf.all.forwarding=1

And LXC container seem to have ipv4 and ipv6 now.