From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Ayres Subject: Re: ARP cache problems / slow connect times in routed mode - Bug #596 opened Date: Sat, 01 Apr 2006 11:05:37 -0500 Message-ID: <442EA4D1.1010600@tektonic.net> References: <442D95E6.3030602@tektonic.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <442D95E6.3030602@tektonic.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Matt Ayres wrote: > Synopsis: > > A user of mine has debugged this issue for me. It seems a Xen guest in > routed mode wants to arp cache any host it connects to with the MAC > address FE:FF:FF:FF:FF:FF. The user also identified long connection > times due to this. While a remote host is in the arp cache connection > times are fast (30ms or so), when it is not it can be well over 1000ms. > They have provided me the tcpdump output that proves this. They also > proved it is due to the ARP cache by statically adding a remote host to > the ARP cache and noting that connection times are very low. > > Full debugging information is attached to the bug. > > Bug URL: http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=596 > I have assigned this by to myself and marked it as INVALID. It appears to be specific to CentOS / Fedora and my specific setup. Thank you, Matt Ayres