Networking problems

Configuration
1

I recently resolved some ipv6 networking issues on my LAN. I then proceeded to re-enable ipv6 on the network interface on my firewall. This has had the effect of causing the HA instance to not be able to reach the HA cloud.
There are a couple strange issues with this:

  • ipv6 hostnames resolve and addresses ping just fine from every device, including the HA box
  • I was not able to disable ipv6 via the Supervisor due to complaints of the ipv6.property being invalid
  • There are 3 different interfaces with the ipv4 LAN address assigned to them in nmtui: Wired connection, ens1, and eno1. I figured it should be only eno1 as I see with the ‘ip addr’ command
  • I manually changed ipv6 to “ignore” within nmtui, yet the darned interface still has an ipv6 address assigned to it.
    This has been pretty frustrating as the network stack seems to be somewhat decoupled.
2

Which HA installation method did you use?

Have you tried disabling IPv6 here Settings > System > Network

3

I’m using HA supervised. Debian 10 with convenience script installation.

It’d likely be easier to just start the network from scratch.
I’m wondering if renaming the NetworkManager conf and rebooting would do the trick.

4

I ended up resolving the issue by renaming the config file at /etc/NetworkManager/system-connections. For some reason, I had 3 different network config files here, all with the same static address set.