In case you have trouble creating the condition that reproduces this bug, there are two ways (that I know of) that will create two default routes on an interface:
1) Configure two IPv6 routers on the same network and have each send their own RAs with the same GA-prefix. This will cause the host to configure an IPv6 SLAAC address and create the two default routes. 2) Configure systemd-networkd E.g. assume your interface is called enp0s9 and you already have add a config file in /etc/system/network/10-enp0s9.network. Now add an override.conf as follows: $ cat /etc/systemd/network/10-enp0s9.network.d/override.conf [Network] Address=2001:2:0:1000:a00:27ff:fe5f:f72d/64 [Route] Gateway=fe80::200:10ff:fe10:1060 GatewayOnLink=true [Route] Gateway=fe80::200:10ff:fe10:1061 GatewayOnLink=true Now reload and reconfigure the interface and you will see two routes. $ networkctl reload $ networkctl reconfigure enp0s9 $ ip -6 r $ ip -6 r show dev enp0s9 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2070412 Title: "ip route show dev enp0s9" does not show all routes for enp0s9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iproute2/+bug/2070412/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
