Re: [PATCH 1/2] IPV6: remove addresses and routes when carrier is lost

[Stephen Hemminger <shemminger@vyatta.com>]

On Tue, 03 Jun 2008 10:53:08 -0700 (PDT)
David Miller <davem@davemloft.net> wrote:

> From: Stephen Hemminger <shemminger@vyatta.com>
> Date: Tue, 3 Jun 2008 10:46:40 -0700
> 
> > It is not what desktop users want, that is why it is a dynamic configuration
> > option via /proc/sys/net/ipv6/conf/ethX/link_detect.
> > 
> > But it is what a router wants. So why not allow it? Obviously, Vyatta
> > users expect systems behave same as Cisco.
> > 
> > The problem with doing it all in user space are not impossible just more difficult:
> >   * links bouncing lead to synchronization problems
> >   * existing Quagga code avoids messing with "system routes" 
> >   * Quagga has to be portable to Solaris/BSD etc..
> > 
> > More at:
> > http://osdir.com/ml/network.quagga.devel/2004-08/msg00009.html
> 
> If it's a route behavioral attribute, make it as such and add
> a new rtnetlink route attribute.  If it's not there, existing
> behavior is maintained.
> 

How would this work for system generated routes which occur
when address is added to interface?