Ipv6 on Kenno's Open Note

IPv6 addr-gen-mode = default - But what is that default value?

Sun, 17 Sep 2023 19:01:19 +1000

On Fedora 38, the version of NetworkMnager is 1.42.8, and the “default” setting for ipv6.add-gen-mode is default. The possible value for ipv6.add-gen-mode is eui64, stable-privacy, default-or-eui64, and default.

This blog post is my attempt to understand a bit more about this IPv6 setting addr-gen-mode. On my workstation, the NetworkManager connection in use in this post is called br0. Here are are some commands to display the version number of NetworkManager and the (default) current setting of ipv6.addr-gen-mode:

Configure IPv6 for Proxmox Host via Slaac

Sat, 16 Sep 2023 01:21:05 +1000

The Proxmox server running at home only has an IPv4 statically assigned to it. Since I’ve been trying to get all my connected devices at home to get IPv6 assigned, I figured I should try with this Proxmox server next.

I’m running Proxmox VE 8.0.4, and it’s based on Debian 12 (bookwarm). The settings for its network interfaces are stored in /etc/network/interfaces:

root@pve:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.8/24
        gateway 192.168.1.1
        bridge-ports enp2s0
        bridge-stp off
        bridge-fd 0

Here is the output of vmbr0 device:

How to configure IPv6 on FreeBSD via SLAAC

Fri, 08 Sep 2023 19:05:36 +1000

I recently got IPv6 running at home, with most devices including my iPhone happily get an IPv6 assigned. My NAS running FreeBSD13.2 currently only has an IPv4 assigned, so I’m going to configure IPv6 for it too.

I’m still new to IPv6. The way I have it setup on my router, running OPNsense, is to set the “Router Advertisements” to “Unmanaged” with DHCPv6 disabled. “Unmanaged” for SLAAC (A flag), and SLAAC stands for Stateless Address Autoconfiguration. In simple term, each client will pick its own IPv6 based on the route prefix advertised by the router. This is just a simplification, and you should not quote for me this.