netdev: I have the same question as Jan in his original thread: http://lkml.iu.edu/hypermail/linux/kernel/1108.3/01897.html
If a Linux device has multiple IPv6 default routes (e.g. via eth0 and wlan0), they all currently have the same metric 1024. But, wired route is normally preferred. So, it should have a lower metric. It is my understanding that the kernel currently sets this default route metric to 1024 when it receives a IPv6 router advertisement on a link. Is there any way to control the default route metric value on a per-interface basis, i.e. router advertisements received on eth0 will get metric 1024, and router advertisements received on wlan0 will get metric, say, 1028?
