From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: Re: [PATCH net-next 2/3] rds: Enable RDS IPv6 support Date: Wed, 27 Jun 2018 13:45:13 -0700 Message-ID: <4bccd9bf-4858-4c9f-aac1-d25a8083ac09@oracle.com> References: <7f4f460079d3d78a18f7d759488048798e99c4db.1529922794.git.ka-cheong.poon@oracle.com> <20180625170317.GA28578@oracle.com> <25e1afda-7497-7f08-815a-286cf775bc09@oracle.com> <20180625175006.GI14823@oracle.com> <43b790c2-8da6-9f18-ae23-ca55388e8b26@oracle.com> <20180626101657.GA20575@oracle.com> <20180626130844.GD20575@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Cc: netdev@vger.kernel.org, davem@davemloft.net, rds-devel@oss.oracle.com To: Ka-Cheong Poon , Sowmini Varadhan Return-path: Received: from aserp2130.oracle.com ([141.146.126.79]:43998 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934902AbeF0UpT (ORCPT ); Wed, 27 Jun 2018 16:45:19 -0400 In-Reply-To: Content-Language: en-US Sender: netdev-owner@vger.kernel.org List-ID: On 6/27/2018 3:07 AM, Ka-Cheong Poon wrote: > On 06/26/2018 09:08 PM, Sowmini Varadhan wrote: >> On (06/26/18 21:02), Ka-Cheong Poon wrote: [...] > > > I don't expect RDS apps will want to use link local address > in the first place.  In fact, most normal network apps don't. > This is not true. > >> You're not doing this for IPv4 and RDS today (you dont have to do this >> for UDP, afaik) > > > Do you know of any IPv4 RDS app which uses IPv4 link local > address?  In fact, IPv4 link local address is explicitly > disallowed for active active bonding. > Yes. Cluster-ware HAIP makes use of link local addresses. That check was mainly because of RDMA CM issues but that only means active-active isn't used. The bonding works just fine and if needed cluster-ware can also use TCP transport. Lets not add this new behavior for link local and its actually not relevant to really v6 addressing support. Regards, Santosh