Comments

• nobizzle Veteran

  June 2018 edited June 2018

  First of all.. I banned IPv6 from my hetzner machines. It was a lot of work to make it work, but I had several problems later on (mainly caused by openvpn), so i dropped the config.

  When I had it on my host I installed bridge-utils and got the following settings which made the machine reachable via ipv6:

  source-directory /etc/network/interfaces.d
  
  auto lo
  iface lo inet loopback
  
  auto vmbr0
  iface vmbr0 inet static
  address 1.2.3.10
  netmask 255.255.255.224
  gateway 1.2.3.1
  pointopoint 1.2.3.1
  bridge_ports eth0
  bridge_stp off
  bridge_maxwait 5
  
  iface vmbr0 inet6 static
  address 2a01:4f8:1234:1234::2
  netmask 64
  gateway fe80::1
  
  bridge_ports eth0
  bridge_stp off
  bridge_maxwait 5
  

  of course youll have to change the settings for the bridge_ports accordingly

  Have a look at this topic too
• Mr_Tom Member, Host Rep

  June 2018

  I had an issue with IPv6 on one of my dedis with them - opened a ticket and they fixed it as it was a routing issue.
• plumberg Veteran, Megathread Squad

  June 2018

  @nobizzle said:
  First of all.. I banned IPv6 from my hetzner machines. It was a lot of work to make it work, but I had several problems later on (mainly caused by openvpn), so i dropped the config.

  When I had it on my host I installed bridge-utils and got the following settings which made the machine reachable via ipv6:

  source-directory /etc/network/interfaces.d
  
  auto lo
  iface lo inet loopback
  
  auto vmbr0
  iface vmbr0 inet static
  address 1.2.3.10
  netmask 255.255.255.224
  gateway 1.2.3.1
  pointopoint 1.2.3.1
  bridge_ports eth0
  bridge_stp off
  bridge_maxwait 5
  
  iface vmbr0 inet6 static
  address 2a01:4f8:1234:1234::2
  netmask 64
  gateway fe80::1
  
  bridge_ports eth0
  bridge_stp off
  bridge_maxwait 5
  

  of course youll have to change the settings for the bridge_ports accordingly

  Have a look at this topic too

  Seems it was a temp issue with the network, my host is reachable via IPV6.

  I was interested in Proxmox, and seems like your referenced topic is relevant. I will go through that and try to get the same setup on a guest OS.

  Thanks
• plumberg Veteran, Megathread Squad

  June 2018

  @nobizzle said:
  First of all.. I banned IPv6 from my hetzner machines. It was a lot of work to make it work, but I had several problems later on (mainly caused by openvpn), so i dropped the config.

  ...

  Have a look at this topic too

  So I got ProxMox Installed. I created a Debian Guest VM. But, I have no connectivity on the guest. I am trying to see if I can get the guest vms (multiple) be accessible via IPv6 because of the /64 subnet available

  Host Settings (it is reachable via both ipv4 and IPv6 (2a01:4f8:XXXX:XXXX::2) without issues.

  source /etc/network/interfaces.d/*

      auto lo
      iface lo inet loopback
      iface lo inet6 loopback
      auto enp2s0
      iface enp2s0 inet static
        address 46.4.XX.YY
        netmask 255.255.255.192
        gateway 46.4.19.65
        up route add -net 46.4.19.64 netmask 255.255.255.192 gw 46.4.19.65 dev enp2s0
  
  
      iface enp2s0 inet6 static
        address 2a01:4f8:XXXX:XXXX::2
        netmask 128
        gateway fe80::1
        up sysctl -p
  
      auto vmbr0
      iface vmbr0 inet static
             address   46.4.XX.XX
             netmask   255.255.255.192
             bridge_ports none
             bridge_stp off
             bridge_fd 0
  
      iface vmbr0 inet6 static
        address 2a01:4f8:XXXX:XXXX::2
        netmask 64
  

  On Guest:

      iface ems12 inet6 static
        address 2a01:4f8:XXXX:XXXX::10
        netmask 64
  

  Not sure what I am doing wrong. The Guest can SSH to my host via ipv6 (::2).

  Thanks
• Falzo Veteran

  June 2018

  you're lacking a gateway on the guest (should be your hosts) and most likely need to enable ipv6 forwarding on the host (sysctl)
• plumberg Veteran, Megathread Squad

  June 2018

  @Falzo said:
  you're lacking a gateway on the guest (should be your hosts) and most likely need to enable ipv6 forwarding on the host (sysctl)

  i added the gateway (hosts ipv6 ip).

  Also, here is the op of sysctl -p on host:

  root@Debian-94-stretch-64-minimal ~ # sysctl -p net.ipv4.ip_forward = 1 net.ipv6.conf.all.forwarding = 1
  Thanks