From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chris Friesen" Subject: Re: "ip neigh show" not showing arp cache entries? Date: Mon, 10 Dec 2007 11:54:56 -0600 Message-ID: <475D7D70.5030502@nortel.com> References: <475D7901.1040900@nortel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: "Chris Friesen" Return-path: In-Reply-To: <475D7901.1040900@nortel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Chris Friesen wrote: > > I'm seeing some strange behaviour on a 2.6.14 ppc64 system. If I run > "ip neigh show" it prints out nothing, but if I run "arp" then I see the > other nodes on the local network. > > > root@base0-0-0-5-0-11-1:/root> ip neigh show > root@base0-0-0-5-0-11-1:/root> arp -n > Address HWtype HWaddress Flags Mask Iface > 172.24.132.0 ether 00:01:AF:14:E8:DA C bond0 > 172.24.132.1 (incomplete) bond0 > 172.24.136.0 ether 00:C0:8B:07:B3:7E C bond0 > 172.24.132.4 ether 00:01:AF:14:E8:DA C bond0 > 172.24.132.2 ether 00:01:AF:14:E8:DA C bond0 > > > Any ideas what's going on here? I've got some further information. If I look for a specific address, it seems to work: root@base0-0-0-5-0-11-1:/root> ip neigh show 172.24.136.0 172.24.136.0 dev bond0 lladdr 00:c0:8b:07:b3:7e REACHABLE In the above scenario, the arp cache lists the device as reachable via bond0. If I search the arp cache to see whether the address is reachable from one of bond0's slave devices, should it come back positive or negative? Chris