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Date:	Thu, 7 Aug 2014 20:32:20 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Dexuan Cui <decui@...rosoft.com>
Cc:	Richard Weinberger <richard.weinberger@...il.com>,
	David Miller <davem@...emloft.net>,
	"Yue Zhang (OSTC DEV)" <yuezha@...rosoft.com>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"driverdev-devel@...uxdriverproject.org" 
	<driverdev-devel@...uxdriverproject.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Shao <huishao@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH] Hyperv: Trigger DHCP renew after host hibernation

On Fri, Aug 08, 2014 at 03:13:58AM +0000, Dexuan Cui wrote:
> > -----Original Message-----
> > From: Richard Weinberger [mailto:richard.weinberger@...il.com]
> > Sent: Friday, August 8, 2014 6:37 AM
> > To: David Miller; Yue Zhang (OSTC DEV)
> > Cc: olaf@...fle.de; netdev@...r.kernel.org; driverdev-
> > devel@...uxdriverproject.org; LKML; Greg KH; jasowang@...hat.com;
> > Haiyang Zhang; KY Srinivasan; Thomas Shao; Dexuan Cui
> > Subject: Re: [PATCH] Hyperv: Trigger DHCP renew after host hibernation
> > 
> > On Mon, Jul 21, 2014 at 11:32 PM, David Miller <davem@...emloft.net>
> > wrote:
> > > From: Olaf Hering <olaf@...fle.de>
> > > Date: Mon, 21 Jul 2014 11:18:51 +0200
> > >
> > >> On Mon, Jul 21, Richard Weinberger wrote:
> > >>
> > >>> My concern is that 10 seconds is maybe not a the right choice.
> > >>> (As we cannot know all implementations)
> > >>
> > >> Until someone reports an issue with it, 10 is fine. Just like 20 or 666.
> > >
> > > Wrong, this is policy and belongs in userspace.
> > 
> > The "/etc/init.d/network restart" nonsense now hit Linus' tree.
> > Yue, what is your proposal to fix that?
> > 
> > //richard
> 
> Hi Richard and all,
> Sorry for the late response -- actually we have been trying to
> figure out a solution that's acceptable to all.
> 
> IMO the most feasible and need-the-least-change solution may be:
> the hyperv network VSC driver passes the event
> RNDIS_STATUS_NETWORK_CHANGE to the udev daemon?
> 
> In this way, every distro only needs to add a udev rule, which should
> be simple.

No, don't do that, again, act like any other network device, drop the
link and bring it up when it comes back.

greg k-h
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