Thank you very much for your bug report. Let me ask some clarifying questions / notes:
1/ ipv6.ignore-auto-dns: "true" => This is about not picking up a nameserver via IPv6 autoconfiguration / DHCP, so unrelated to the default route. 2/ ipv6.never-default: "true" => This asks NetworkManager to never set the default on this interface / connection. Both settings are correctly set in Netplan's "passthrough" section. The "ip route" output that you showed does not contain any default route (as requested), i.e. nothing specifying the "default" or "::/0" target network. I can only see "2a00:1398:300:14::/64" and "2000::/3", which are specific target networks, not the "default" fallback. Interestingly, the route-metric is relatively low (50), which means if there's any traffic towards those specific networks, it might choose those routes, as the default route usually has a higher metric of 100. But for a VPN this is usually what we want. If you do not want traffic to be routed through "tun0", you could try increasing the "ipv6.route-metric", to e.g. 150 (to make it higher than your "default" route). So I do not fully understand the question.. The configuration seems to be matching the routing table. Can you please elaborate on your expected outcome a bit more? Reference: https://networkmanager.dev/docs/api/latest/settings-ipv6.html ** Changed in: netplan.io (Ubuntu) Status: New => Incomplete ** Summary changed: - Network manager still adds default ipv6 route despite setting to ignore it + NetworkManager still adds default ipv6 route despite setting to ignore it -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2106017 Title: NetworkManager still adds default ipv6 route despite setting to ignore it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/2106017/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
