[SOLVED] IPv6 not working after upgrading to 22.10 from 22.04

[jagdtigger]

Greetings!

Just noticed that IPv6 not working after i upgraded, not sure where the problem is because i set things in the GUI and havent changed anything network related settings for quite a while now.... When i try to ping anything (including the router) i always get this error: Destination unreachable: Address unreachable

Where should i start looking for the troublemaker?

Thanks in advance!

[Snowhog]

Might be helpful? https://askubuntu.com/questions/1386...6-on-interface

[jagdtigger]

In my case network manager is handling the config for interfaces:

# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager

​

ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:01:2e:80:8b:81 brd ff:ff:ff:ff:ff:ff
    inet 10.125.210.150/24 brd 10.125.210.255 scope global noprefixroute enp6s0
       valid_lft forever preferred_lft forever
    inet6 2001:/128 scope global noprefixroute
       valid_lft forever preferred_lft forever
    inet6 fe80::4bd3:a152:51bd:2d41/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: enp7s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:01:2e:80:8b:82 brd ff:ff:ff:ff:ff:ff
    inet 10.125.210.151/24 brd 10.125.210.255 scope global noprefixroute enp7s0
       valid_lft forever preferred_lft forever
    inet6 2001:/128 scope global noprefixroute
       valid_lft forever preferred_lft forever
    inet6 fe80::5987:d410:14a0:a72c/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
4: wlp5s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 9c:da:3e:a6:1c:dd brd ff:ff:ff:ff:ff:ff

​
​

(Removed global v6 addresses.)

[jagdtigger]

Finally solved it, i had to pull out one of the network cables. For some reason it doesnt work if you have 2 interfaces connected to the same network....