Re: Bridge responds on its IP address even when br0 is down.

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Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx> wrote on 2010/06/09 17:23:19:
>
> On Wed, 9 Jun 2010 16:46:01 +0200
> Joakim Tjernlund <joakim.tjernlund@xxxxxxxxxxxx> wrote:
>
> >
> > System A:
> > eth0 has ip 192.168.1.16
> >
> > Then do in system A
> > brctl addbr br0
> > ifconfig br0 192.168.1.18 down
> >
> >
> > From system B I ping 192.168.1.18
> > and system A responds!
> >
> > Even though interface br0 is down I can still
> > access system A with 192.168.1.18, this feels
> > like a bridge bug?
> >
>
> No that is how Linux works. All addresses are property of the
> system not the interface.
>    http://en.wikipedia.org/wiki/Host_model

I see, I know the about the host model but I was surprised it applied
to interfaces that is down. Does it not make sense to exclude the
IP address when the I/F is down?

        Jocke

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