Re: IPv6 default routes / NM vs. kernel autoconfig

[Phil Mayers <p mayers imperial ac uk>]

On 24/07/12 14:38, Ross Vandegrift wrote:

> > The lower-metric route should be from NetworkManager and it should reflect
> > the default route for the device that is used for connectivity. In your
> > case it seems to be nonsense.
>
> Why does NM do this?  Iv6 autoconf is a dynamic routing protocol that

I must admit, I was surprised to see this.

> chooses the best available default on the network.  *Any* static
> default breaks this mechanism, and should only be used to workaround a
> broken network configuration.
>
> Though a router did a somewhat surprising thing (coming up with a
> different link-local address), the network here is working perfectly
> well.

Note also in this case, it turned a dual gateway network into a single 
gateway one.