From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: KVM doesn't send an arp announce after live migrating a domain Date: Wed, 25 Aug 2010 14:07:30 +0300 Message-ID: <20100825110730.GM10499@redhat.com> References: <4C74CBB0.7080203@kangaroot.net> <4C74D641.6020907@msgid.tls.msk.ru> <20100825084312.GH10499@redhat.com> <4C74F5B3.7040900@msgid.tls.msk.ru> <20100825105902.GK10499@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Nils Cant , kvm@vger.kernel.org To: Michael Tokarev Return-path: Received: from mx1.redhat.com ([209.132.183.28]:54443 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751435Ab0HYLHl (ORCPT ); Wed, 25 Aug 2010 07:07:41 -0400 Content-Disposition: inline In-Reply-To: <20100825105902.GK10499@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, Aug 25, 2010 at 01:59:02PM +0300, Gleb Natapov wrote: > > Kvm is the most natural place to do that, I think, and it's > > easy to implement there too (it has the tun device which can > > inject packets on behalf of the guest) Yes, the configuration > > will be duplicated somehow, but that's not a big problem, and > > it will make things much more reliable. > > > KVM is certainly not the most natural place to do that. Even gratuitous > ARP we have today will not work if guest changes mac address. KVM > couldn't care less about host network protocols. Management may implement Correction: "couldn't care less about _guest_ network protocols" > guest daemon that will take appropriate action to restore networking > after migration on demand (send gratuitous pigeon if IP over pigeons are > used by guest). > > -- > Gleb. > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Gleb.