Comment # 9 on bug 1175641 from Dominik Platz

Here is an overview how other distributions handle this.
I'm looking at
- "/sbin/sysctl net.ipv6.conf.enp0s3.accept_redirects" which could be either 0
or 1
- "ip -6 route" which has the fd00 line with or without the "via fe80::" thing

So we have 4 possible combinations:

1. accept_redirects = 0  AND with "via fe80::"
openSUSE Leap 15.3 KDE
openSUSE Leap 15.3 GNOME
Fedora 35 KDE Spin (see below for the original Fedora version)

2. accept_redirects = 0  AND without "via fe80::"
openSUSE Leap 15.3 Server
openSUSE Tumbleweed (wicked)

3. accept_redirects = 1  AND with "via fe80::"
Mint 20.2 Cinnamon
Ubuntu Server 20.04
Kubuntu 20.04
KDE Neon 2021-11-16
Fedora 35 Gnome
Debian 11.1 (Gnome)
Arch
Kali (Gnome & KDE)
CentOS 8.5
Cent OS 9 Stream

4. accept_redirects = 1  AND without "via fe80::"
Raspberry Pi OS