netdev - Re: ping -I eth1 ....

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Message-ID: <20101105142510.GA14986@canuck.infradead.org>
Date:	Fri, 5 Nov 2010 10:25:10 -0400
From:	Thomas Graf <tgraf@...radead.org>
To:	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Cc:	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org
Subject: Re: ping -I eth1 ....

On Fri, Nov 05, 2010 at 03:01:57PM +0100, Joakim Tjernlund wrote:
> > > Then I do ifconfig eth1 down
> > > and I still see the same. Should not
> > > sendto and/or revcfrom return some error as
> > > the interface is down?
> >
> > Hmm, this reminds me one patch, yes...
> >
> > Search for " ipv4: remove all rt cache entries on UNREGISTER event"
> >
> > http://permalink.gmane.org/gmane.linux.network/173391
> 
> Ah, that does the trick. A few comments though:
> 
> 1) I think you should include IFF_RUNNING too

Probably even better to base it on the operational state of the link

netif_running() && netif_oper_up() && netif_carrier_ok() && !netif_dormant()
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